CVE-2026-80179

CVSS 5.9 (medium) · published 2026-08-28

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.

Weakness: CWE-770

Source: NVD CVE-2026-80179

References

• https://access.redhat.com/errata/RHSA-2026:98061
• 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
• https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4

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