gitlab-rails-ce-19.5 — security advisory

{
  "id": "65f1156eb77145874a772ab34fa74c60792d62aa9b5e1d9327bfe02c9e2026f0",
  "url": "https://osv.dev/vulnerability/CGA-hjj8-j4cg-95vx",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CGA-hjj8-j4cg-95vx",
    "summary": "CGA-hjj8-j4cg-95vx",
    "evidence": "osv:CGA-hjj8-j4cg-95vx",
    "products": [
      {
        "name": {
          "value": "gitlab-rails-ce-19.5",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CGA-hjj8-j4cg-95vx",
      "aliases": [
        "CGA-hjj8-j4cg-95vx"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "gitlab-rails-ce-19.5",
            "purl": "pkg:apk/chainguard/gitlab-rails-ce-19.5?arch=x86_64",
            "ecosystem": "Chainguard"
          },
          "database_specific": {
            "source": "https://advisories.cgr.dev/chainguard/v3/osv/CGA-hjj8-j4cg-95vx.json"
          },
          "ecosystem_specific": {
            "components": [
              {
                "component_name": "css_parser",
                "component_purl": "pkg:gem/css_parser@1.22.0",
                "component_type": "gem",
                "component_version": "1.22.0",
                "component_location": "/srv/gitlab/vendor/bundle/ruby/3.3.0/specifications/css_parser-1.22.0.gemspec",
                "latest_event_status": "pending_upstream_fix",
                "latest_event_timestamp": "2026-10-15T18:02:34Z"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-15T22:15:59.254899426Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-53727",
        "GHSA-9pmc-p236-855h"
      ],
      "references": [
        "https://github.com/premailer/css_parser/releases/tag/v3.0.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53727.json",
        "https://github.com/premailer/css_parser/security/advisories/GHSA-9pmc-p236-855h",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53727",
        "https://github.com/premailer/css_parser/commit/7d2ddf0189cd54b54f378f59daefa10cb036e476",
        "https://github.com/premailer/css_parser/commit/e0a151458b2a801ae265ba420862ef8b1127b3ae"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-53727",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 336489,
  "published_at": "2026-10-15T18:02:13+00:00"
}