{ "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-2026-29086", "tracking": { "current_release_date": "2026-04-01T09:56:19.450324Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-29086", "initial_release_date": "2026-03-04T20:39:49.027421Z", "revision_history": [ { "date": "2026-03-04T20:39:49.027421Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-04T20:39:51.441606Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-04T22:39:39.298992Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-04T22:39:41.691412Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-04T23:24:44.738029Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-04T23:24:51.531977Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-05T00:20:53.396572Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-05T14:12:36.844364Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-05T14:12:38.086308Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-05T16:16:05.972477Z", "number": "10", "summary": "References created (1).| CWES updated (1)." }, { "date": "2026-03-05T16:39:02.367678Z", "number": "11", "summary": "Unknown change." }, { "date": "2026-03-05T18:20:56.805694Z", "number": "12", "summary": "References created (1).| CWES updated (1)." }, { "date": "2026-03-06T18:25:34.174739Z", "number": "13", "summary": "Products created (1).| Product Identifiers created (1)." }, { "date": "2026-03-06T18:25:36.474429Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:35:40.185846Z", "number": "15", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:35:42.402043Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-31T12:05:55.434201Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (3)." }, { "date": "2026-03-31T12:05:57.917482Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-04-01T09:56:11.764058Z", "number": "19", "summary": "Products connected (1).| References created (1)." }, { "date": "2026-04-01T09:56:16.529064Z", "number": "20", "summary": "NCSC Score updated." } ], "status": "interim", "version": "20" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<13.0.7.0", "product": { "name": "vers:unknown/<13.0.7.0", "product_id": "CSAFPID-5963615" } } ], "category": "product_name", "name": "App Connect Enterprise" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1337760", "product_identification_helper": { "cpe": "cpe:/a:ibm:app_connect_enterprise:-" } } } ], "category": "product_name", "name": "IBM App Connect Enterprise" } ], "category": "vendor", "name": "IBM" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<4.12.4", "product": { "name": "vers:unknown/<4.12.4", "product_id": "CSAFPID-5767222", "product_identification_helper": { "cpe": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*" } } } ], "category": "product_name", "name": "Hono" } ], "category": "vendor", "name": "Hono" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<4.12.4", "product": { "name": "vers:unknown/<4.12.4", "product_id": "CSAFPID-5759408" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<4.12.4", "product": { "name": "vers:unknown/>=0|<4.12.4", "product_id": "CSAFPID-5759799" } } ], "category": "product_name", "name": "hono" } ], "category": "vendor", "name": "honojs" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-29086", "cwe": { "id": "CWE-113", "name": "Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')" }, "notes": [ { "category": "description", "text": "## Summary\n\nThe `setCookie()` utility did not validate semicolons (`;`), carriage returns (`\\r`), or newline characters (`\\n`) in the `domain` and `path` options when constructing the `Set-Cookie` header.\n\nBecause cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields.\n\n## Details\n\n`setCookie()` builds the `Set-Cookie` header by concatenating option values. While the cookie value itself is URL-encoded, the `domain` and `path` options were previously interpolated without rejecting unsafe characters.\n\nIncluding `;`, `\\r`, or `\\n` in these fields could result in unintended additional attributes (such as `SameSite`, `Secure`, `Domain`, or `Path`) being appended to the cookie header.\n\nModern runtimes prevent full header injection via CRLF, so this issue is limited to attribute-level manipulation within a single `Set-Cookie` header.\n\nThe issue has been fixed by rejecting these characters in the `domain` and `path` options.\n\n## Impact\n\nAn attacker may be able to manipulate cookie attributes if an application passes user-controlled input directly into the `domain` or `path` options of `setCookie()`.\n\nThis could affect cookie scoping or security attributes depending on browser behavior. Exploitation requires application-level misuse of cookie options.", "title": "github - https://github.com/advisories/GHSA-5pq2-9x2x-5p6w" }, { "category": "description", "text": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\\r), or newline characters (\\n) in the domain and path options when constructing the Set-Cookie header. Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields. This issue has been patched in version 4.12.4.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-29086" }, { "category": "description", "text": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\\r), or newline characters (\\n) in the domain and path options when constructing the Set-Cookie header. Because cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields. This issue has been patched in version 4.12.4.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-29086" }, { "category": "description", "text": "## Summary\n\nThe `setCookie()` utility did not validate semicolons (`;`), carriage returns (`\\r`), or newline characters (`\\n`) in the `domain` and `path` options when constructing the `Set-Cookie` header.\n\nBecause cookie attributes are delimited by semicolons, this could allow injection of additional cookie attributes if untrusted input was passed into these fields.\n\n## Details\n\n`setCookie()` builds the `Set-Cookie` header by concatenating option values. While the cookie value itself is URL-encoded, the `domain` and `path` options were previously interpolated without rejecting unsafe characters.\n\nIncluding `;`, `\\r`, or `\\n` in these fields could result in unintended additional attributes (such as `SameSite`, `Secure`, `Domain`, or `Path`) being appended to the cookie header.\n\nModern runtimes prevent full header injection via CRLF, so this issue is limited to attribute-level manipulation within a single `Set-Cookie` header.\n\nThe issue has been fixed by rejecting these characters in the `domain` and `path` options.\n\n## Impact\n\nAn attacker may be able to manipulate cookie attributes if an application passes user-controlled input directly into the `domain` or `path` options of `setCookie()`.\n\nThis could affect cookie scoping or security attributes depending on browser behavior. Exploitation requires application-level misuse of cookie options.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-5pq2-9x2x-5p6w.json?alt=media" }, { "category": "other", "text": "0.00032", "title": "EPSS" }, { "category": "other", "text": "4.2", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to a product by vendor Ibm, Is related to (a version of) an uncommon product, Is related to an uncommon product vendor, The value of the most recent EPSS score", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5759408", "CSAFPID-5759799", "CSAFPID-5767222", "CSAFPID-5963615", "CSAFPID-1337760" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-5pq2-9x2x-5p6w" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-5pq2-9x2x-5p6w" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-29086" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/29xxx/CVE-2026-29086.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29086" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-29086" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-5pq2-9x2x-5p6w.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-29086" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0933.json" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/honojs/hono/security/advisories/GHSA-5pq2-9x2x-5p6w" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/honojs/hono/commit/44ae0c8cc4d5ab2bed529127a4ac72e1483ad073" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-5pq2-9x2x-5p6w" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29086" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0933.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0933" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7268023" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.ibm.com/support/pages/node/7268166" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1337760", "CSAFPID-5759408", "CSAFPID-5759799", "CSAFPID-5767222", "CSAFPID-5963615" ] } ], "title": "CVE-2026-29086" } ] }