CVE-2026-80179

Jwcrypto: jwcrypto: denial of service via malformed jwe tokens

Published: Aug 27, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-770

5.9MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-770

Affected Products

Red Hat

commercial·US

Red Hat Ansible Automation Platform 2On-premDev Tool

DevTools & CI / ci-cd

Red Hat Enterprise Linux 10On-premOS

Operating Systems / linux-distro

Red Hat OpenShift AI (RHOAI)SaaSSaaS Service

Cloud & SaaS

Red Hat OpenStack Platform 16.2On-prem

Cloud & SaaS / cloud-platform

and 1 more affected products View all →

Exploitability

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://access.redhat.com/security/cve/CVE-2026-80179

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2524147

bugzilla.redhat.com

https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4

github.com

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