| Name | CVE-2026-80179 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1145983 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-jwcrypto (PTS) | bookworm | 1.1.0-1+deb12u1 | vulnerable |
| trixie | 1.5.6-1.1~deb13u1 | vulnerable |
| forky, sid | 1.5.6-1.2 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[trixie] - python-jwcrypto <no-dsa> (Minor issue)
[bookworm] - python-jwcrypto <postponed> (Minor issue, DoS)
https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4