CVE-2025-30204

golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · March 22, 2025

Updated · November 4, 2026

Description

A flaw was found in the golang-jwt implementation of JSON Web Tokens (JWT). In affected versions, a malicious request with specially crafted Authorization header data may trigger an excessive consumption of resources on the host system. This issue can cause significant performance degradation or an application crash, leading to a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Red Hat Product Security does not have a recommended mitigation at this time.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-405 · Asymmetric Resource Consumption (Amplification)