CVE-2026-80179

5.9 mediumEPSS 0.4%

Medium (5.9). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.9 medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
CWE: CWE-770
Published: 2026-08-28
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

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
https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4

Check your stack JSON