VulnerabilityAwaiting Analysis
CVE-2026-80179
A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters.
MEDIUM 5.9EPSS 0.25%
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Source
- secalert@redhat.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.