CVE-2026-80179

Summary

A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. This malformed token can force the JWE.deserialize() function to allocate excessive memory, leading to a MemoryError. This issue results in a denial of service (DoS) for services that process untrusted JWE values.

Affected Software

Weaknesses

• CWE-770: Allocation of Resources Without Limits or Throttling

References

• https://access.redhat.com/security/cve/CVE-2026-80179
• https://bugzilla.redhat.com/show_bug.cgi?id=2524147
• https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4

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