RLSA-2026:98074: 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
rocky-linux/cjose-debugsourceto a version that resolves this vulnerability.Fixed in 0:0.6.2.2-8.el10_3.1 - Upgrade
Upgrade
rocky-linux/cjoseto a version that resolves this vulnerability.Fixed in 0:0.6.2.2-8.el10_3.1 - Upgrade
Upgrade
rocky-linux/cjose-develto a version that resolves this vulnerability.Fixed in 0:0.6.2.2-8.el10_3.1 - Upgrade
Upgrade
rocky-linux/cjose-debuginfoto a version that resolves this vulnerability.Fixed in 0:0.6.2.2-8.el10_3.1
Event History
Frequently Asked Questions
Which Rocky Linux systems should be reviewed for this update?
Review systems with cjose, cjose-devel, cjose-debugsource, or cjose-debuginfo installed. The advisory identifies these Rocky Linux packages as affected by the security update.
What attack conditions are indicated by the severity information?
The CVSS vector indicates network-reachable exploitation with low attack complexity, no privileges required, and no user interaction required. It also indicates high confidentiality and integrity impact, with no availability impact.
Which encryption use case is relevant to this issue?
The issue concerns AES-CBC-HMAC JWE encryption. Environments using cjose for that JWE encryption mode should prioritize assessment and remediation.