Threats Tagged 'cve-2026-53939'
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Threats Tagged 'cve-2026-53939'
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CVE-2026-53939: CWE-321: Use of Hard-coded Cryptographic Key in OpenIDC cjoseCVE-2026-53939 0 CVE-2026-53939 is a critical vulnerability in the OpenIDC cjose C library affecting versions 0.6.1 through 0.6.2.5. The flaw causes the content-encryption key (CEK) used in AES-CBC-HMAC encryption to be all zero bytes instead of randomly generated, resulting in encryption under a fixed, publicly known key. This allows anyone with access to the encrypted data to decrypt and modify it. The issue is fixed in version 0.6.2.6. Mitigations for new ciphertexts include using AES-GCM encryption, supplying a CEK directly, or avoiding the affected algorithm combinations. Data already encrypted with the zero key remains compromised and should be re-encrypted with rotated secrets. Join the discussion | CVE Database V5 | 09/08/2026, 23:36:13 UTC Added: 09/09/2026, 11:05:13 UTC |
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