What’s Vulnerable › Vulnerabilities

CVE-2024-28122: JWX vulnerable to a denial of service attack using compressed JWE message

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-03-09 · updated 2026-06-17
• Weakness: CWE-400

Description

JWX is Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. This vulnerability allows an attacker with a trusted public key to cause a Denial-of-Service (DoS) condition by crafting a malicious JSON Web Encryption (JWE) token with an exceptionally high compression ratio. This issue has been patched in versions 1.2.29 and 2.0.21.

Affected products

• lestrrat-go jwx: before 1.2.29; from 2.0.0 before 2.0.21 — fixed in 1.2.29, 2.0.21

How to fix

Upgrade to a fixed version: lestrrat-go jwx 1.2.29, 2.0.21. Check the vendor advisory for mitigations.

References

• https://github.com/lestrrat-go/jwx/releases/tag/v1.2.29
• https://github.com/lestrrat-go/jwx/releases/tag/v2.0.21
• https://github.com/lestrrat-go/jwx/security/advisories/GHSA-hj3v-m684-v259
• https://github.com/lestrrat-go/jwx/releases/tag/v1.2.29
• https://github.com/lestrrat-go/jwx/releases/tag/v2.0.21
• https://github.com/lestrrat-go/jwx/security/advisories/GHSA-hj3v-m684-v259

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