TI-2024-14385 Aliases CVE-2024-21664 GHSA-pvcr-v8j8-j5q3

Parsing JSON serialized payload without protected field can lead to segfault

HIGH 66CWE-476Published 2024-01-09 · Updated 2025-06-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-476.

Summary

jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. Calling `jws.Parse` with a JSON serialized payload where the `signature` field is present while `protected` is absent can lead to a nil pointer dereference. The vulnerability can be used to crash/DOS a system doing JWS verification. This vulnerability has been patched in versions 2.0.19 and 1.2.28.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00864 58th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial jwx (lestrrat-go): 2.0.19, 1.2.28github.com/lestrrat-go/jwx (Go): 1.2.28+1 more productRed Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
lestrrat-go	jwx	2.0.0 to before 2.0.19; 1.0.8 to before 1.2.28	2.0.19, 1.2.28	Patch available	CNA
—	github.com/lestrrat-go/jwx (Go)	1.0.8 to before 1.2.28	1.2.28	Patch available	GHSA-pvcr-v8j8-j5q3
—	github.com/lestrrat-go/jwx/v2 (Go)	before 2.0.19	2.0.19	Patch available	GHSA-pvcr-v8j8-j5q3

jwx Vendorlestrrat-go Affected 2.0.0 to before 2.0.19; 1.0.8 to before 1.2.28 Fixed in 2.0.19, 1.2.28 Patch available CNA
github.com/lestrrat-go/jwx (Go) Vendor— Affected 1.0.8 to before 1.2.28 Fixed in 1.2.28 Patch available GHSA-pvcr-v8j8-j5q3
github.com/lestrrat-go/jwx/v2 (Go) Vendor— Affected before 2.0.19 Fixed in 2.0.19 Patch available GHSA-pvcr-v8j8-j5q3

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:lestrrat-go:jwx::::::::	before 2.0.19	Vulnerable	lestrrat-go

cpe:2.3:a:lestrrat-go:jwx:*:*:*:*:*:*:*:* Versions before 2.0.19 Vulnerable ·lestrrat-go

Remediation

Fix · CNA jwx (lestrrat-go) Fixed in 2.0.19, 1.2.28
Fix · GHSA-pvcr-v8j8-j5q3 github.com/lestrrat-go/jwx (Go) Fixed in 1.2.28 Advisory →
Fix · GHSA-pvcr-v8j8-j5q3 github.com/lestrrat-go/jwx/v2 (Go) Fixed in 2.0.19 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
OpenShift Service Mesh 2	Affected	No fix planned: Will not fix

Timeline

2026-10-02 Threatist record created from CVE-2024-21664
2026-10-03 Alias added: GHSA-pvcr-v8j8-j5q3

References

Exploit 1

https://github.com/lestrrat-go/jwx/security/advisories/GHSA-pvcr-v8j8-j5q3

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2024-21664

Other 2

TI-2024-18702 JWX vulnerable to a denial of service attack using compressed JWE message CVSS 3.1MEDIUM 6.8
TI-2023-26926 Malicious parameters can cause a denial of service in lestrrat-go/jwx CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences