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Security update for cosign

Type: advisorySource: OSV1 source record

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: * 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 * 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, bsc#1282542)

Announced Group revision 1
Original source ↗

SUSE-SU-2026:4392-1

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:SUSE-SU-2026:4392-1

cosign

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/3/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/4/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/4/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/5/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/5/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/6/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/6/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/7/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/7/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/8/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/8/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/9/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/9/ranges

Prerequisites
Not stated in this record

cosign

Source reference: /affected/10/package/name

Affected versions
Not stated in this record
Fixed versions
3.1.3-150400.3.57.1

Source reference: /affected/10/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

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    "package": {
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    "database_specific": {
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    "package": {
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    ],
    "package": {
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    },
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    },
    "ecosystem_specific": {
      "binaries": [
        {
          "cosign": "3.1.3-150400.3.57.1"
        }
      ]
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#37641 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. SUSE-SU-2026:4392-1 · Revision 1Source updated