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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6281-1 gnutls28 security update
Ubuntu USN Ubuntu USN USN-8284-1 GnuTLS vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 01 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title Guntls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-208
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10.2
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-01T19:28:10.391Z

Reserved: 2026-04-02T11:07:20.944Z

Link: CVE-2026-5419

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-01T21:16:47.480

Modified: 2026-06-01T21:16:47.480

Link: CVE-2026-5419

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T21:30:26Z

Weaknesses