Vulnerability Description
A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of information disclosure.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:13274
- https://access.redhat.com/errata/RHSA-2026:20612
- https://access.redhat.com/errata/RHSA-2026:20613
- https://access.redhat.com/errata/RHSA-2026:26319
- https://access.redhat.com/errata/RHSA-2026:26409
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:30004
- https://access.redhat.com/errata/RHSA-2026:32962
- https://access.redhat.com/security/cve/CVE-2026-5419
- https://bugzilla.redhat.com/show_bug.cgi?id=2467686
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-13
FAQ
What is CVE-2026-5419?
CVE-2026-5419 is a vulnerability with a CVSS score of 3.7 (LOW). A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive informati...
How severe is CVE-2026-5419?
CVE-2026-5419 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5419?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.