Vulnerability in Red Hat Discovery 2
CVE-2026-5419
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.003
Affected products
- Red Hat Discovery 2 — versions 1782159791, 1782166952
- Red Hat Enterprise Linux 10 — versions 0:3.8.10-4.el10_2
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:3.8.9-9.el10_0.19
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:3.8.10-4.el9_8
- Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions — versions 0:3.8.3-4.el9_4.6
- Red Hat Enterprise Linux 9.6 Extended Update Support — versions 0:3.8.3-6.el9_6.4
- Red Hat Hardened Images — versions 3.8.13-1.hum1
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:20613 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-5419 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:20612 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:26319 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:26409 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:29197 (vendor-advisory)
- www.gnutls.org/security-new.html
- access.redhat.com/errata/RHSA-2026:30004 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:32962 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-5419?
- CVE-2026-5419 is a low-severity vulnerability in Red Hat Discovery 2, classified under CWE-208. CVSS score: 3.7/10. Published 2026-06-01.
- How severe is CVE-2026-5419?
- Low severity. CVSS v3 base score is 3.7 out of 10.