When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will...

{
  "id": "a09631404d14f550f0cd58fcf2cf47b0b248ed92d137f3c0083ad8746596ea95",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2026-EL50504",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will...",
    "summary": "CVE-2026-27137 affects multiple packages. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered. See references for individual vulnerability details.",
    "evidence": "osv:CLEANSTART-2026-EL50504",
    "products": [
      {
        "name": {
          "value": "kubernetes-csi-external-snapshotter",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8.7.0-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "opa-fips",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.21.2-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CLEANSTART-2026-EL50504",
      "aliases": [
        "CLEANSTART-2026-EL50504"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8.7.0-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "kubernetes-csi-external-snapshotter",
            "purl": "pkg:apk/cleanstart/kubernetes-csi-external-snapshotter",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-EL50504.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.21.2-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "opa-fips",
            "purl": "pkg:apk/cleanstart/opa-fips",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-EL50504.json"
          }
        }
      ],
      "modified": "2026-10-27T00:45:05.480867550Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-27137"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-EL50504.json",
        "https://osv.dev/vulnerability/CVE-2026-27137",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27137"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-27137",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 459067,
  "published_at": "2026-10-27T00:38:45.10595+00:00"
}