This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-80179 →

DEBIAN-CVE-2026-80179

A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. Th...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 python-jwcrypto

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 python-jwcrypto

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 python-jwcrypto

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org