CVE-2024-28122: JWX is Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies

This month

MEDIUM 6.8UPGRADE

CVE-2024-28122 is a medium-severity flaw (CVSS 6.8) affecting jwx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-400
Published	2024-03-09
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: lestrrat-go

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-03-09 01:15 UTCPublished CVE record published
2026-06-17 07:21 UTCUpdated Record last modified

lestrrat-go jwx UPGRADE

Affected: < 1.2.29 · >= 2.0.0 and < 2.0.21

Fixed in: 1.2.29, 2.0.21

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy jwx || rpm -q jwx || jwx --version

2. UPGRADE to 1.2.29 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jwx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jwx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison jwx sudo apt install jwx=<VERSION_BEFORE_2.0.0> sudo apt-mark hold jwx

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jwx sudo dnf downgrade jwx-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add jwx

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-28122?

jwx: upgrade to 1.2.29, 2.0.21. Exact commands for each OS are on this page.

Is CVE-2024-28122 being exploited?

CVE-2024-28122 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-28122 affect?

CVE-2024-28122 affects jwx. Severity is medium (CVSS 6.8). 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 JSO

How urgent is CVE-2024-28122?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2024-21664 MEDIUM 4.3 UPGRADE jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies
CVE-2023-49290 MEDIUM 5.3 UPGRADE lestrrat-go/jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technol

References

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