{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-26275", "tracking": { "current_release_date": "2026-03-22T16:34:58.426443Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-26275", "initial_release_date": "2026-02-17T21:39:29.734556Z", "revision_history": [ { "date": "2026-02-17T21:39:29.734556Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1)." }, { "date": "2026-02-17T21:39:37.054509Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-19T22:26:01.915583Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-02-19T22:26:08.261680Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-02-19T22:39:20.397585Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (5).| CWES updated (1)." }, { "date": "2026-02-19T22:39:30.071336Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-02-20T14:13:43.391742Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-02-20T14:13:45.200053Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-02-20T16:53:50.163849Z", "number": "9", "summary": "Unknown change." }, { "date": "2026-02-20T17:39:37.157050Z", "number": "10", "summary": "References created (1)." }, { "date": "2026-02-26T03:18:54.599355Z", "number": "11", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (16).| Products created (3).| References created (7).| CWES updated (1)." }, { "date": "2026-03-03T18:24:47.255036Z", "number": "12", "summary": "Products created (1).| Product Identifiers created (1)." }, { "date": "2026-03-03T18:24:49.004983Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:44:15.461464Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:44:17.915106Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:16:38.058900Z", "number": "16", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (8).| CWES updated (1)." }, { "date": "2026-03-20T18:16:41.159401Z", "number": "17", "summary": "NCSC Score updated." } ], "status": "interim", "version": "17" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/0.0.23", "product": { "name": "vers:unknown/0.0.23", "product_id": "CSAFPID-5873857" } }, { "category": "product_version_range", "name": "vers:unknown/<0.0.23", "product": { "name": "vers:unknown/<0.0.23", "product_id": "CSAFPID-5873858" } } ], "category": "product_name", "name": "cargo/httpsig-hyper" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.0.23", "product": { "name": "vers:unknown/<0.0.23", "product_id": "CSAFPID-5757043", "product_identification_helper": { "cpe": "cpe:2.3:a:junkurihara:httpsig-hyper:*:*:*:*:*:rust:*:*" } } } ], "category": "product_name", "name": "httpsig-hyper" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/0.0.1", "product": { "name": "vers:unknown/0.0.1", "product_id": "CSAFPID-3111249" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.10", "product": { "name": "vers:unknown/0.0.10", "product_id": "CSAFPID-3111258" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.11", "product": { "name": "vers:unknown/0.0.11", "product_id": "CSAFPID-3111259" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.12", "product": { "name": "vers:unknown/0.0.12", "product_id": "CSAFPID-3111260" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.13", "product": { "name": "vers:unknown/0.0.13", "product_id": "CSAFPID-3111261" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.14", "product": { "name": "vers:unknown/0.0.14", "product_id": "CSAFPID-3111262" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.15", "product": { "name": "vers:unknown/0.0.15", "product_id": "CSAFPID-3111263" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.16", "product": { "name": "vers:unknown/0.0.16", "product_id": "CSAFPID-3111264" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.19", "product": { "name": "vers:unknown/0.0.19", "product_id": "CSAFPID-5032956" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.20", "product": { "name": "vers:unknown/0.0.20", "product_id": "CSAFPID-5723508" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.21", "product": { "name": "vers:unknown/0.0.21", "product_id": "CSAFPID-5723509" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.22", "product": { "name": "vers:unknown/0.0.22", "product_id": "CSAFPID-5723510" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.3", "product": { "name": "vers:unknown/0.0.3", "product_id": "CSAFPID-3111251" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.4", "product": { "name": "vers:unknown/0.0.4", "product_id": "CSAFPID-3111252" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.5", "product": { "name": "vers:unknown/0.0.5", "product_id": "CSAFPID-3111253" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.6", "product": { "name": "vers:unknown/0.0.6", "product_id": "CSAFPID-3111254" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.7", "product": { "name": "vers:unknown/0.0.7", "product_id": "CSAFPID-3111255" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.8", "product": { "name": "vers:unknown/0.0.8", "product_id": "CSAFPID-3111256" } }, { "category": "product_version_range", "name": "vers:unknown/0.0.9", "product": { "name": "vers:unknown/0.0.9", "product_id": "CSAFPID-3111257" } }, { "category": "product_version_range", "name": "vers:unknown/<0.0.23", "product": { "name": "vers:unknown/<0.0.23", "product_id": "CSAFPID-5642473" } } ], "category": "product_name", "name": "httpsig-rs" } ], "category": "vendor", "name": "junkurihara" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-26275", "cwe": { "id": "CWE-354", "name": "Improper Validation of Integrity Check Value" }, "notes": [ { "category": "description", "text": "### Impact\n\nAn issue was discovered in `httpsig-hyper` where Digest header verification could incorrectly succeed due to misuse of Rust's `matches!` macro. Specifically, the comparison:\n\n```rust\nif matches!(digest, _expected_digest)\n```\n\ntreated `_expected_digest` as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression.\n\nAs a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value.\n\nApplications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. The severity depends on how the library is integrated and whether additional signature validation layers are enforced.\n\n---\n\n### Patches\n\nThis issue has been fixed in:\n\n- `httpsig-hyper` >= 0.0.23\n\nThe fix replaces the incorrect `matches!` usage with proper value comparison and additionally introduces constant-time comparison for digest verification as defense-in-depth.\n\nRegression tests have also been added to prevent reintroduction of this issue. Users are strongly advised to upgrade to the patched version.\n\n---\n\n### Workarounds\n\nThere is no reliable workaround without upgrading. Users who cannot immediately upgrade should avoid relying solely on Digest verification for message integrity and ensure that full HTTP message signature verification is enforced at the application layer.\n\n---\n\n### References\n\n- PR: https://github.com/junkurihara/httpsig-rs/pull/14\n- Follow-up hardening and test additions: https://github.com/junkurihara/httpsig-rs/pull/15", "title": "github - https://github.com/advisories/GHSA-7v42-g35v-xrch" }, { "category": "description", "text": "httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in `httpsig-hyper` prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's `matches!` macro. Specifically, the comparison `if matches!(digest, _expected_digest)` treated `_expected_digest` as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value. Applications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. The severity depends on how the library is integrated and whether additional signature validation layers are enforced. This issue has been fixed in `httpsig-hyper` 0.0.23. The fix replaces the incorrect `matches!` usage with proper value comparison and additionally introduces constant-time comparison for digest verification as defense-in-depth. Regression tests have also been added to prevent reintroduction of this issue. Users are strongly advised to upgrade to the patched version. There is no reliable workaround without upgrading. Users who cannot immediately upgrade should avoid relying solely on Digest verification for message integrity and ensure that full HTTP message signature verification is enforced at the application layer.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-26275" }, { "category": "description", "text": "httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in `httpsig-hyper` prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's `matches!` macro. Specifically, the comparison `if matches!(digest, _expected_digest)` treated `_expected_digest` as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value. Applications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. The severity depends on how the library is integrated and whether additional signature validation layers are enforced. This issue has been fixed in `httpsig-hyper` 0.0.23. The fix replaces the incorrect `matches!` usage with proper value comparison and additionally introduces constant-time comparison for digest verification as defense-in-depth. Regression tests have also been added to prevent reintroduction of this issue. Users are strongly advised to upgrade to the patched version. There is no reliable workaround without upgrading. Users who cannot immediately upgrade should avoid relying solely on Digest verification for message integrity and ensure that full HTTP message signature verification is enforced at the application layer.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-26275" }, { "category": "description", "text": "httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in `httpsig-hyper` prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's `matches!` macro. Specifically, the comparison `if matches!(digest, _expected_digest)` treated `_expected_digest` as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value. Applications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. The severity depends on how the library is integrated and whether additional signature validation layers are enforced. This issue has been fixed in `httpsig-hyper` 0.0.23. The fix replaces the incorrect `matches!` usage with proper value comparison and additionally introduces constant-time comparison for digest verification as defense-in-depth. Regression tests have also been added to prevent reintroduction of this issue. Users are strongly advised to upgrade to the patched version. There is no reliable workaround without upgrading. Users who cannot immediately upgrade should avoid relying solely on Digest verification for message integrity and ensure that full HTTP message signature verification is enforced at the application layer.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-26275.json?alt=media" }, { "category": "description", "text": "An issue was discovered in `httpsig-hyper` where Digest header verification could incorrectly succeed due to misuse of Rust's `matches!` macro. Specifically, the comparison:\n\n```rust\nif matches!(digest, _expected_digest)\n```\n\ntreated `_expected_digest` as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression.\n\nAs a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value.\n\nApplications relying on Digest verification as part of HTTP message signature validation may therefore fail to detect message body modification. The severity depends on how the library is integrated and whether additional signature validation layers are enforced.\n\n---", "title": "gitlab - https://gitlab.com/api/v4/projects/25847700/repository/files/cargo%2Fhttpsig-hyper%2FCVE-2026-26275.yml/raw" }, { "category": "other", "text": "0.00018", "title": "EPSS" }, { "category": "other", "text": "4.5", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Nvd, Is related to an uncommon cwe id", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent EPSS score, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "fixed": [ "CSAFPID-5873857" ], "known_affected": [ "CSAFPID-5642473", "CSAFPID-3111249", "CSAFPID-3111251", "CSAFPID-3111252", "CSAFPID-3111253", "CSAFPID-3111254", "CSAFPID-3111255", "CSAFPID-3111256", "CSAFPID-3111257", "CSAFPID-3111258", "CSAFPID-3111259", "CSAFPID-3111260", "CSAFPID-3111261", "CSAFPID-3111262", "CSAFPID-3111263", "CSAFPID-3111264", "CSAFPID-5032956", "CSAFPID-5723508", "CSAFPID-5723509", "CSAFPID-5723510", "CSAFPID-5757043", "CSAFPID-5873858" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-7v42-g35v-xrch" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-7v42-g35v-xrch" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26275" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26275" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-26275" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/26xxx/CVE-2026-26275.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-26275" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-26275.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - gitlab", "url": "https://gitlab.com/api/v4/projects/25847700/repository/files/cargo%2Fhttpsig-hyper%2FCVE-2026-26275.yml/raw" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/junkurihara/httpsig-rs/security/advisories/GHSA-7v42-g35v-xrch" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/junkurihara/httpsig-rs/pull/14" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/junkurihara/httpsig-rs/pull/15" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/junkurihara/httpsig-rs/commit/5533f596c650377e02f4aa9e3eb8dba591b87370" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/junkurihara/httpsig-rs/commit/65cbd19b395180a4bba09a89746c4b14ccb8d297" }, { "category": "external", "summary": "Reference - github; gitlab", "url": "https://github.com/advisories/GHSA-7v42-g35v-xrch" }, { "category": "external", "summary": "Reference - github; gitlab; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26275" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26275.json" }, { "category": "external", "summary": "Reference - gitlab", "url": "https://github.com/junkurihara/httpsig-rs" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-3111249", "CSAFPID-3111251", "CSAFPID-3111252", "CSAFPID-3111253", "CSAFPID-3111254", "CSAFPID-3111255", "CSAFPID-3111256", "CSAFPID-3111257", "CSAFPID-3111258", "CSAFPID-3111259", "CSAFPID-3111260", "CSAFPID-3111261", "CSAFPID-3111262", "CSAFPID-3111263", "CSAFPID-3111264", "CSAFPID-5032956", "CSAFPID-5642473", "CSAFPID-5723508", "CSAFPID-5723509", "CSAFPID-5723510", "CSAFPID-5757043", "CSAFPID-5873858" ] } ], "title": "CVE-2026-26275" } ] }