ALSA-2026:92145: Critical: cjose security update
CJose is C library implementing the Javascript Object Signing and Encryption (JOSE).
Security Fix(es):
cjose: OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption (CVE-2026-53939)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
almalinux/cjoseto a version that resolves this vulnerability.Fixed in 0.6.1-17.el9_8.2 - Upgrade
Upgrade
almalinux/cjose-develto a version that resolves this vulnerability.Fixed in 0.6.1-17.el9_8.2
Event History
Frequently Asked Questions
Which systems should be prioritized for remediation?
Prioritize AlmaLinux systems with the cjose package installed that use it to perform JWE encryption with AES-CBC-HMAC. The advisory also lists cjose-devel, which should be updated where it is installed.
How can I determine whether a deployment is exposed to the affected behavior?
Check whether cjose or cjose-devel is installed on the AlmaLinux host, then determine whether the application uses cjose for AES-CBC-HMAC JWE encryption. The provided advisory information does not state whether other JWE encryption modes are affected.