OESA-2026-4057

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4057
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json
JSON Data
https://api.test.osv.dev/v1/vulns/OESA-2026-4057
Upstream
CVE (2)
Published
2026-09-25T01:27:46Z
Modified
2026-09-25T01:45:08Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
cjose security update
Details

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 content-encryption key (CEK), the CEK is all zero bytes instead of being randomly generated. The resulting JWE is therefore encrypted and authenticated under a fixed, publicly known key, so anyone who obtains the JWE can recover the plaintext and forge or modify the content. This is fixed in version 0.6.2.6 by _cjose_jwe_set_cek_aes_cbc() generating the CEK from RAND_bytes. A regression test asserts that the encrypted_key differs across two encryptions for each AES-CBC-HMAC variant. Until upgrading, for data encrypted with cjose, three options are available. Use an AES-GCM enc (A128GCM / A192GCM / A256GCM) instead of an AES-CBC-HMAC enc, use alg=dir with a caller-supplied CEK, or avoid using cjose for JWE encryption with the affected algorithm pair. These are mitigations for new ciphertexts only; data already encrypted under the zero key remains compromised and should be re-encrypted (and any secrets it contained rotated).(CVE-2026-53939)

Database specific 
{
    "severity": "Critical"
}
References

Affected packages

openEuler:20.03-LTS-SP4
cjose

Package

Name
cjose
Purl
pkg:rpm/openEuler/cjose&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.2.7-1.oe2003sp4

Ecosystem specific 

{
    "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"
    ],
    "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"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
openEuler:22.03-LTS-SP4
cjose

Package

Name
cjose
Purl
pkg:rpm/openEuler/cjose&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.2.7-1.oe2203sp4

Ecosystem specific 

{
    "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"
    ],
    "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"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
openEuler:24.03-LTS-SP1
cjose

Package

Name
cjose
Purl
pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.2.7-1.oe2403sp1

Ecosystem specific 

{
    "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"
    ],
    "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"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
openEuler:24.03-LTS-SP3
cjose

Package

Name
cjose
Purl
pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.2.7-1.oe2403sp3

Ecosystem specific 

{
    "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"
    ],
    "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"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"
openEuler:24.03-LTS-SP4
cjose

Package

Name
cjose
Purl
pkg:rpm/openEuler/cjose&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.2.7-1.oe2403sp4

Ecosystem specific 

{
    "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"
    ],
    "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"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4057.json"