CVE-2026-80179 — Jwcrypto: jwcrypto: denial of service via malformed jwe tokens
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 forc…
Published: 2026-08-27 · CVSS: 5.9 · CVSS 3.1
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 Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7