{ "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-2026-26310", "tracking": { "current_release_date": "2026-03-27T21:40:34.200273Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-26310", "initial_release_date": "2026-03-10T19:19:15.050492Z", "revision_history": [ { "date": "2026-03-10T19:19:15.050492Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-10T19:19:16.826722Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-10T19:38:53.846694Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| References created (1).| CWES updated (1)." }, { "date": "2026-03-10T19:38:57.903071Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-10T21:27:53.581944Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-03-10T21:27:56.587796Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-10T21:39:51.705657Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-03-11T00:04:14.916199Z", "number": "8", "summary": "References created (1)." }, { "date": "2026-03-11T00:14:18.083934Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| Product Identifiers created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-03-11T15:00:51.257528Z", "number": "10", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-11T15:00:53.745393Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-11T16:26:43.662538Z", "number": "12", "summary": "Products connected (4).| Product Identifiers created (4).| Exploits created (1)." }, { "date": "2026-03-11T16:26:48.221219Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-12T12:16:22.704156Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| Products connected (5).| References created (4)." }, { "date": "2026-03-12T12:16:25.023434Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-12T15:04:12.070522Z", "number": "16", "summary": "EPSS updated." }, { "date": "2026-03-12T15:04:14.535164Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-19T15:29:56.675268Z", "number": "18", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-19T15:29:59.112638Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:44:03.871993Z", "number": "20", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-27T09:06:33.036136Z", "number": "21", "summary": "Products connected (1).| References created (3)." } ], "status": "interim", "version": "21" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/envoy proxy", "product": { "name": "vers:unknown/envoy proxy", "product_id": "CSAFPID-5810304", "product_identification_helper": { "cpe": "cpe:/a:google:cloud_platform:envoy_proxy" } } }, { "category": "product_version_range", "name": "vers:unknown/istio", "product": { "name": "vers:unknown/istio", "product_id": "CSAFPID-5810308", "product_identification_helper": { "cpe": "cpe:/a:google:cloud_platform:istio" } } }, { "category": "product_version_range", "name": "vers:unknown/service mesh <1.26.8-asm.3", "product": { "name": "vers:unknown/service mesh <1.26.8-asm.3", "product_id": "CSAFPID-5810305" } }, { "category": "product_version_range", "name": "vers:unknown/service mesh <1.27.8-asm.7", "product": { "name": "vers:unknown/service mesh <1.27.8-asm.7", "product_id": "CSAFPID-5810307" } }, { "category": "product_version_range", "name": "vers:unknown/service mesh <1.28.5-asm.9", "product": { "name": "vers:unknown/service mesh <1.28.5-asm.9", "product_id": "CSAFPID-5810306" } } ], "category": "product_name", "name": "Cloud Platform" } ], "category": "vendor", "name": "Google" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/1.37.0", "product": { "name": "vers:unknown/1.37.0", "product_id": "CSAFPID-5780406", "product_identification_helper": { "cpe": "cpe:2.3:a:envoyproxy:envoy:1.37.0:*:*:*:*:*:*:*", "purl": "pkg:golang/github.com/envoyproxy/envoy@1.37.0" } } }, { "category": "product_version_range", "name": "vers:unknown/<1.34.13", "product": { "name": "vers:unknown/<1.34.13", "product_id": "CSAFPID-5777010", "product_identification_helper": { "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<=1.34.12", "product": { "name": "vers:unknown/>=0|<=1.34.12", "product_id": "CSAFPID-5780409" } }, { "category": "product_version_range", "name": "vers:unknown/>=1.35.0|<1.35.8", "product": { "name": "vers:unknown/>=1.35.0|<1.35.8", "product_id": "CSAFPID-5795752", "product_identification_helper": { "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=1.35.0|<1.35.9", "product": { "name": "vers:unknown/>=1.35.0|<1.35.9", "product_id": "CSAFPID-5777009" } }, { "category": "product_version_range", "name": "vers:unknown/>=1.35.0|<=1.35.8", "product": { "name": "vers:unknown/>=1.35.0|<=1.35.8", "product_id": "CSAFPID-5780408" } }, { "category": "product_version_range", "name": "vers:unknown/>=1.36.0|<1.36.5", "product": { "name": "vers:unknown/>=1.36.0|<1.36.5", "product_id": "CSAFPID-5777008", "product_identification_helper": { "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=1.36.0|<=1.36.4", "product": { "name": "vers:unknown/>=1.36.0|<=1.36.4", "product_id": "CSAFPID-5780407" } }, { "category": "product_version_range", "name": "vers:unknown/>=1.37.0|<1.37.1", "product": { "name": "vers:unknown/>=1.37.0|<1.37.1", "product_id": "CSAFPID-5777007" } } ], "category": "product_name", "name": "Envoy" } ], "category": "vendor", "name": "Envoy Proxy" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317175", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:5::server" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux" } ], "category": "vendor", "name": "Red Hat" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-26310", "notes": [ { "category": "description", "text": "### Summary\n\nCalling `Utility::getAddressWithPort` with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter.\n\n### Details\n\nThe crashing function is `Utility::getAddressWithPort`. The crash occurs if a string containing a scoped IPv6 address is passed to this function.\n\nThis vulnerability affects:\n\n1. The **original src filter**: If the filter is configured and the original source is a scoped IPv6 address, it will cause a crash.\n2. **DNS response address resolution**: If a DNS response contains a scoped IPv6 address, this will also trigger the crash.\n\n### PoC\n\nTo reproduce the vulnerability:\n\n1. **Method A (Original Src Filter):** Configure the `original src` filter in Envoy and provide a scoped IPv6 address as the original source.\n2. **Method B (DNS Resolution):** Trigger a DNS resolution process within Envoy where the DNS response contains a scoped IPv6 address.\n\n### Impact\n\nThis is a Denial of Service (DoS) vulnerability. It impacts users who have the `original src` filter configured or whose Envoy instances resolve addresses from DNS responses that may contain scoped IPv6 addresses.", "title": "github - https://github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "description", "text": "Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-26310" }, { "category": "description", "text": "Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-26310" }, { "category": "description", "text": "### Summary\n\nCalling `Utility::getAddressWithPort` with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter.\n\n### Details\n\nThe crashing function is `Utility::getAddressWithPort`. The crash occurs if a string containing a scoped IPv6 address is passed to this function.\n\nThis vulnerability affects:\n\n1. The **original src filter**: If the filter is configured and the original source is a scoped IPv6 address, it will cause a crash.\n2. **DNS response address resolution**: If a DNS response contains a scoped IPv6 address, this will also trigger the crash.\n\n### PoC\n\nTo reproduce the vulnerability:\n\n1. **Method A (Original Src Filter):** Configure the `original src` filter in Envoy and provide a scoped IPv6 address as the original source.\n2. **Method B (DNS Resolution):** Trigger a DNS resolution process within Envoy where the DNS response contains a scoped IPv6 address.\n\n### Impact\n\nThis is a Denial of Service (DoS) vulnerability. It impacts users who have the `original src` filter configured or whose Envoy instances resolve addresses from DNS responses that may contain scoped IPv6 addresses.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-3cw6-2j68-868p.json?alt=media" }, { "category": "description", "text": "### Summary\n\nCalling `Utility::getAddressWithPort` with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter.\n\n### Details\n\nThe crashing function is `Utility::getAddressWithPort`. The crash occurs if a string containing a scoped IPv6 address is passed to this function.\n\nThis vulnerability affects:\n\n1. The **original src filter**: If the filter is configured and the original source is a scoped IPv6 address, it will cause a crash.\n2. **DNS response address resolution**: If a DNS response contains a scoped IPv6 address, this will also trigger the crash.\n\n### PoC\n\nTo reproduce the vulnerability:\n\n1. **Method A (Original Src Filter):** Configure the `original src` filter in Envoy and provide a scoped IPv6 address as the original source.\n2. **Method B (DNS Resolution):** Trigger a DNS resolution process within Envoy where the DNS response contains a scoped IPv6 address.\n\n### Impact\n\nThis is a Denial of Service (DoS) vulnerability. It impacts users who have the `original src` filter configured or whose Envoy instances resolve addresses from DNS responses that may contain scoped IPv6 addresses.", "title": "github - https://api.github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "other", "text": "7e-05", "title": "EPSS" }, { "category": "other", "text": "4.4", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is exploit data available from source Nvd, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5777007", "CSAFPID-5777008", "CSAFPID-5777009", "CSAFPID-5777010", "CSAFPID-5780406", "CSAFPID-5780407", "CSAFPID-5780408", "CSAFPID-5780409", "CSAFPID-5795752", "CSAFPID-5810304", "CSAFPID-5810305", "CSAFPID-5810306", "CSAFPID-5810307", "CSAFPID-5810308", "CSAFPID-1317175" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-26310" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/26xxx/CVE-2026-26310.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26310" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26310" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-3cw6-2j68-868p.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-26310" }, { "category": "external", "summary": "Source raw - 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-2026-0704.json" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-3cw6-2j68-868p" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-3cw6-2j68-868p" }, { "category": "external", "summary": "Reference - github", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26310" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0704.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0704" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://docs.cloud.google.com/support/bulletins#gcp-2026-013" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://docs.cloud.google.com/service-mesh/docs/security-bulletins#gcp-2026-013" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://access.redhat.com/errata/RHSA-2026:5952" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://access.redhat.com/errata/RHSA-2026:5950" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://access.redhat.com/errata/RHSA-2026:5948" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.9, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1317175", "CSAFPID-5777007", "CSAFPID-5777008", "CSAFPID-5777009", "CSAFPID-5777010", "CSAFPID-5780406", "CSAFPID-5780407", "CSAFPID-5780408", "CSAFPID-5780409", "CSAFPID-5795752", "CSAFPID-5810304", "CSAFPID-5810305", "CSAFPID-5810306", "CSAFPID-5810307", "CSAFPID-5810308" ] } ], "title": "CVE-2026-26310" } ] }