SEPTEMBER 17, 2026
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Case File

CVE-2026-80179

MEDIUM · CVSS 5.9 EPSS 0.25% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability affects the jwcrypto library, allowing remote attackers to exploit malformed JSON Web Encryption (JWE) tokens with excessive period delimiters. This can trigger a MemoryError in the JWE.deserialize() function, resulting in a denial of service (DoS) for any services that handle untrusted JWE values. Organizations using jwcrypto for processing JWE tokens should prioritize addressing this issue to mitigate potential service disruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-80179
Severity
MEDIUM
CVSS
5.9
EPSS
0.25%

Original NVD 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.