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Vulnerabilities

Vulnerability · AZL-101093

CVE-2026-53938 affecting package cjose 0.6.2.2-7

Published Sep 9, 2026 · catalog updated Oct 22, 2026 · affecting package cjose 0.6.2.2-7

Last checked Oct 23, 2026, 8 days ago.

Open the advisory

Exploitation likelihood is not on this record for AZL-101093. A missing EPSS score is not a low risk. Compare affecting package cjose 0.6.2.2-7 with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (affecting package cjose 0.6.2.2-7).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Not established
Affected products
Azure Linux:3 cjose

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 ( = , , ) does not validate the length of the attacker-supplied (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. / 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 ( / / ) for untrusted JWEs at the application layer.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Azure Linux:3 cjose0 → 0.6.2.2-7

How to fix AZL-101093

  • Upgrade

    AZL-101093 lists a fix boundary at 0.6.2.2-7. Compare the installed build with that boundary before you change production.

  • Version check

    Fixed in 0.6.2.2-7

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for AZL-101093. A missing EPSS score is not a low risk. Compare affecting package cjose 0.6.2.2-7 with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 0.6.2.2-7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 9, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    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 ( = , , ) does not validate the length of the attacker-supplied (JWE Encrypted Key) before unwrapping it into a fixed-size, heap-allocated Content Encryption Key (CEK) buffer. A remote, unauthenticated at

  2. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    cjose fixed in 0.6.2.2-7

  3. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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 ( = , , ) does not validate the length of the attacker-supplied (JWE Encrypted Key) before unwrapping it into a fixed-size, heap-allocated Content Encryption Key (CEK) buffer. A remote, unauthenticated at

Sources

References

Freshness

Last verified in this catalog Oct 22, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • OpenSSF OSV / OSV ScannerOct 23, 2026