Hi,

The following vulnerability was published for python-jwcrypto.

CVE-2026-80179[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-80179
https://www.cve.org/CVERecord?id=CVE-2026-80179
[1] https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore