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As of 10/19/2026, cjose recorded 2 security vulnerabilities in the last 90 days, of which 2 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of cjose and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
CVE-2026-53939OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryptionCVE-2026-53938OpenIDC/cjose has a heap buffer overflow in AES Key Wrap decryption (A128KW/A192KW/A256KW)CVE-2023-37464Incorrect Authentication Tag length usage in AES GCM decryption in OpenIDC/cjose| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2026-53939OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption | Exploitation statusActively exploited | FixYes | Published09/08/2026 | SeverityCritical |
CVE-2026-53938OpenIDC/cjose has a heap buffer overflow in AES Key Wrap decryption (A128KW/A192KW/A256KW) | Exploitation statusNot exploited | FixNo | Published09/08/2026 | SeverityHigh |
CVE-2023-37464Incorrect Authentication Tag length usage in AES GCM decryption in OpenIDC/cjose | Exploitation statusNot exploited | FixNo | Published07/14/2023 | SeverityHigh |
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