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CriticalFix available

cjose security update

Type: advisorySource: OSV1 source record

Implementation of JOSE for C/C++ Security Fix(es): OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms (`alg` = `A128KW`, `A192KW`, `A256KW`) does not validate the length of the attacker-supplied `encrypted_key` (JWE Encrypted Key) before unwrapping it into a fixed-size, heap-allocated Content Encryption Key (CEK) buffer. A remote, unauthenticated attacker who can submit a crafted JWE to an application that decrypts it with an AES-KW symmetric key can trigger an out-of-bounds heap write, corrupting the heap. This leads at minimum to a crash (denial of service) and, depending on the heap layout and allocator, may be leverageable for further memory-corruption impact. `cjose_jwe_import()` / `cjose_jwe_decrypt()` are pre-authentication entry points: they parse and process fully attacker-controlled input. Upgrade to cjose 0.6.2.5 to receive a patch. If upgrading is not immediately possible, reject the AES Key Wrap algorithms (`A128KW`/`A192KW`/`A256KW`) for untrusted JWEs at the application layer.(CVE-2026-53938) OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm (`A128CBC-HS256`, `A192CBC-HS384`, or `A256CBC-HS512`) together with any key-management algorithm that generates a fresh cont

Announced Group revision 1
Original source ↗

OESA-2026-4057

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:OESA-2026-4057

cjose

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
0.6.2.7-1.oe2403sp3

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

cjose

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
0.6.2.7-1.oe2403sp4

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

cjose

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
0.6.2.7-1.oe2003sp4

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

cjose

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
0.6.2.7-1.oe2203sp4

Source reference: /affected/3/ranges

Prerequisites
Not stated in this record

cjose

Source reference: /affected/4/package/name

Affected versions
Not stated in this record
Fixed versions
0.6.2.7-1.oe2403sp1

Source reference: /affected/4/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.6.2.7-1.oe2403sp3"
          }
        ]
      }
    ],
    "package": {
      "name": "cjose",
      "purl": "pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP3",
      "ecosystem": "openEuler:24.03-LTS-SP3"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
    },
    "ecosystem_specific": {
      "src": [
        "cjose-0.6.2.7-1.oe2403sp3.src.rpm"
      ],
      "x86_64": [
        "cjose-0.6.2.7-1.oe2403sp3.x86_64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp3.x86_64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp3.x86_64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp3.x86_64.rpm"
      ],
      "aarch64": [
        "cjose-0.6.2.7-1.oe2403sp3.aarch64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp3.aarch64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp3.aarch64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp3.aarch64.rpm"
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.6.2.7-1.oe2403sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "cjose",
      "purl": "pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP4",
      "ecosystem": "openEuler:24.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
    },
    "ecosystem_specific": {
      "src": [
        "cjose-0.6.2.7-1.oe2403sp4.src.rpm"
      ],
      "x86_64": [
        "cjose-0.6.2.7-1.oe2403sp4.x86_64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp4.x86_64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp4.x86_64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp4.x86_64.rpm"
      ],
      "aarch64": [
        "cjose-0.6.2.7-1.oe2403sp4.aarch64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp4.aarch64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp4.aarch64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp4.aarch64.rpm"
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.6.2.7-1.oe2003sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "cjose",
      "purl": "pkg:rpm/openEuler/cjose&distro=openEuler-20.03-LTS-SP4",
      "ecosystem": "openEuler:20.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
    },
    "ecosystem_specific": {
      "src": [
        "cjose-0.6.2.7-1.oe2003sp4.src.rpm"
      ],
      "x86_64": [
        "cjose-0.6.2.7-1.oe2003sp4.x86_64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2003sp4.x86_64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2003sp4.x86_64.rpm",
        "cjose-devel-0.6.2.7-1.oe2003sp4.x86_64.rpm"
      ],
      "aarch64": [
        "cjose-0.6.2.7-1.oe2003sp4.aarch64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2003sp4.aarch64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2003sp4.aarch64.rpm",
        "cjose-devel-0.6.2.7-1.oe2003sp4.aarch64.rpm"
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.6.2.7-1.oe2203sp4"
          }
        ]
      }
    ],
    "package": {
      "name": "cjose",
      "purl": "pkg:rpm/openEuler/cjose&distro=openEuler-22.03-LTS-SP4",
      "ecosystem": "openEuler:22.03-LTS-SP4"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
    },
    "ecosystem_specific": {
      "src": [
        "cjose-0.6.2.7-1.oe2203sp4.src.rpm"
      ],
      "x86_64": [
        "cjose-0.6.2.7-1.oe2203sp4.x86_64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2203sp4.x86_64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2203sp4.x86_64.rpm",
        "cjose-devel-0.6.2.7-1.oe2203sp4.x86_64.rpm"
      ],
      "aarch64": [
        "cjose-0.6.2.7-1.oe2203sp4.aarch64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2203sp4.aarch64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2203sp4.aarch64.rpm",
        "cjose-devel-0.6.2.7-1.oe2203sp4.aarch64.rpm"
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.6.2.7-1.oe2403sp1"
          }
        ]
      }
    ],
    "package": {
      "name": "cjose",
      "purl": "pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP1",
      "ecosystem": "openEuler:24.03-LTS-SP1"
    },
    "database_specific": {
      "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
    },
    "ecosystem_specific": {
      "src": [
        "cjose-0.6.2.7-1.oe2403sp1.src.rpm"
      ],
      "x86_64": [
        "cjose-0.6.2.7-1.oe2403sp1.x86_64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp1.x86_64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp1.x86_64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp1.x86_64.rpm"
      ],
      "aarch64": [
        "cjose-0.6.2.7-1.oe2403sp1.aarch64.rpm",
        "cjose-debuginfo-0.6.2.7-1.oe2403sp1.aarch64.rpm",
        "cjose-debugsource-0.6.2.7-1.oe2403sp1.aarch64.rpm",
        "cjose-devel-0.6.2.7-1.oe2403sp1.aarch64.rpm"
      ]
    }
  }
]

Publisher severity

critical

Source reference: /database_specific/severity

Event
#14700 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. OESA-2026-4057 · Revision 1Source updated