MediumFix available

cups security update

Type: advisorySources: OSV

CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.. Security Fix(es): The cupsUTF32ToUTF8() function in CUPS's cups/transcode.c lacks a source-length bound and can read past the end of the source buffer, resulting in a heap out-of-bounds read. This is reachable via SNMP supply-description parsing in backend/snmp-supplies.c with attacker-controlled content.(CVE-2026-87875) 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.(CVE-2026-87876)

Products: cups
Affected versions: Not specified
Fixed versions: 2.4.7-16.oe2403sp1
CVEs: CVE-2026-87875, CVE-2026-87876
Confirmed fixed CVEs: Not specified
Updated in this feed: 30 Oct 2026, 20:41 UTC · Revision 1

Source evidence

cups security update

core-osv · Original source

Published 16 Oct 2026, 12:00 UTC

osv:OESA-2026-4408

cups

Fixed versions: 2.4.7-16.oe2403sp1

Complete source record

{
  "id": "06c1d2fc17f9a2e7f0ceb18a2ff6384f1b9d6af1f63b9ee7e1122f99e492de3f",
  "url": "https://osv.dev/vulnerability/OESA-2026-4408",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cups security update",
    "summary": "CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.. Security Fix(es): The cupsUTF32ToUTF8() function in CUPS's cups/transcode.c lacks a source-length bound and can read past the end of the source buffer, resulting in a heap out-of-bounds read. This is reachable via SNMP supply-description parsing in backend/snmp-supplies.c with attacker-controlled content.(CVE-2026-87875) 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.(CVE-2026-87876)",
    "evidence": "osv:OESA-2026-4408",
    "products": [
      {
        "name": {
          "value": "cups",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.7-16.oe2403sp1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "OESA-2026-4408",
      "aliases": [
        "OESA-2026-4408"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.7-16.oe2403sp1"
                }
              ]
            }
          ],
          "package": {
            "name": "cups",
            "purl": "pkg:rpm/openEuler/cups&distro=openEuler-24.03-LTS-SP1",
            "ecosystem": "openEuler:24.03-LTS-SP1"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4408.json"
          },
          "ecosystem_specific": {
            "src": [
              "cups-2.4.7-16.oe2403sp1.src.rpm"
            ],
            "noarch": [
              "cups-filesystem-2.4.7-16.oe2403sp1.noarch.rpm",
              "cups-help-2.4.7-16.oe2403sp1.noarch.rpm"
            ],
            "x86_64": [
              "cups-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-client-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-debuginfo-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-debugsource-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-devel-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-ipptool-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-libs-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-lpd-2.4.7-16.oe2403sp1.x86_64.rpm",
              "cups-printerapp-2.4.7-16.oe2403sp1.x86_64.rpm"
            ],
            "aarch64": [
              "cups-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-client-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-debuginfo-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-debugsource-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-devel-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-ipptool-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-libs-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-lpd-2.4.7-16.oe2403sp1.aarch64.rpm",
              "cups-printerapp-2.4.7-16.oe2403sp1.aarch64.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:20.371041112Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-87875",
        "CVE-2026-87876"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4408",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-87875",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-87876"
      ],
      "provider_metadata": {
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-87875",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-87876",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340908,
  "published_at": "2026-10-16T12:00:17+00:00"
}