{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "88e67c00c130a45f3a1edf36686f7a0b2982fef8"
            },
            {
              "fixed": "f56844dbe4a54a9f8e1aeb3b913fbee614156bdb"
            }
          ],
          "repo": "https://github.com/openprinting/cups",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r8jp-q6fh-g5r2"
  ],
  "database_specific": {
    "cna_assigner": "redhat",
    "cwe_ids": [
      "CWE-178"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87876.json"
  },
  "details": "Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username-based access controls in certain configurations.",
  "id": "CVE-2026-87876",
  "modified": "2026-09-11T03:30:30.889242603Z",
  "published": "2026-09-09T16:12:07.970Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://access.redhat.com/downloads/content/package-browser/"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87876"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87876.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-r8jp-q6fh-g5r2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87876"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2530991"
    },
    {
      "type": "FIX",
      "url": "https://github.com/OpenPrinting/cups/commit/88e67c00c130a45f3a1edf36686f7a0b2982fef8"
    },
    {
      "type": "FIX",
      "url": "https://github.com/OpenPrinting/cups/commit/f56844dbe4a54a9f8e1aeb3b913fbee614156bdb"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cups: openprinting cups: remaining case-insensitive username matching in scheduler side paths (cve-2026-27447 follow-up)"
}