Security update for cosign

{
  "id": "3f909699f37986c73f99258dd85719d62098c5c5899c971502444e9217b78489",
  "url": "https://osv.dev/vulnerability/SUSE-SU-2026%3A24213-1",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Security update for cosign",
    "summary": "This update for cosign fixes the following issues: - CVE-2026-56852: golang.org/x/text/unicode/norm: infinite loop on truncated/invalid UTF-8 input (bsc#1272117). - CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and deadlocks in the crypto/ssh library (bsc#1278614). - CVE-2026-56864: x/mod/sumdb: ignore unrelated, unauthenticated hashes in Lookup (bsc#1275025). - CVE-2026-84304: google.golang.org/grpc: heap memory exhaustion via HTTP/2 DATA frame fragmentation (bsc#1279215). - Verification bypass via public key in legacy bundle (bsc#1282542). Changes for cosign: - update to 3.1.3 (bsc#1282542, GHSA-fx35-mq7g-6g98): * This release resolves GHSA-fx35-mq7g-6g98, a verification bypass using an unexpected public key in a legacy bundle. * Auto-detect default digest algorithm for public keys * fix(pkcs11key): return an error instead of panicking when no key pair matches * Supporting OCI Signing with X.509 Certificate Chain * test(inspect): replace mock TSA client usage with local timestamp response generator in * fix: prevent shell completions for various options not taking filenames * fix(blob): compare file checksums case-insensitively in * Verification bypass via public key in legacy bundle (GHSA- fx35-mq7g-6g98)",
    "evidence": "osv:SUSE-SU-2026:24213-1",
    "products": [
      {
        "name": {
          "value": "cosign",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.1.3-160000.1.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "cosign",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.1.3-160000.1.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "SUSE-SU-2026:24213-1",
      "aliases": [
        "SUSE-SU-2026:24213-1"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.1.3-160000.1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "cosign",
            "purl": "pkg:rpm/suse/cosign&distro=SUSE%20Linux%20Enterprise%20Server%2016.0",
            "ecosystem": "SUSE:Linux Enterprise Server 16.0"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24213-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "cosign": "3.1.3-160000.1.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.1.3-160000.1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "cosign",
            "purl": "pkg:rpm/suse/cosign&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0",
            "ecosystem": "SUSE:Linux Enterprise Server for SAP applications 16.0"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24213-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "cosign": "3.1.3-160000.1.1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-21T17:23:10.146441225Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-56852",
        "CVE-2026-56854",
        "CVE-2026-56855",
        "CVE-2026-56864",
        "CVE-2026-78662",
        "CVE-2026-84304"
      ],
      "references": [
        "https://www.suse.com/support/update/announcement/2026/suse-su-202624213-1/",
        "https://bugzilla.suse.com/1272117",
        "https://bugzilla.suse.com/1275025",
        "https://bugzilla.suse.com/1278614",
        "https://bugzilla.suse.com/1279215",
        "https://bugzilla.suse.com/1282542",
        "https://www.suse.com/security/cve/CVE-2026-56852",
        "https://www.suse.com/security/cve/CVE-2026-56854",
        "https://www.suse.com/security/cve/CVE-2026-56855",
        "https://www.suse.com/security/cve/CVE-2026-56864",
        "https://www.suse.com/security/cve/CVE-2026-78662",
        "https://www.suse.com/security/cve/CVE-2026-84304"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-56852",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56854",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56855",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56864",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-78662",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-84304",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 397549,
  "published_at": "2026-10-09T06:33:43+00:00"
}