CVE-2026-5419 LOW

CVE-2026-5419: Gnutls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-208
Published June 1, 2026
Last update June 29, 2026

CVSS base score

3.7/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 29, 2026 Record updated