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.
Published: 2026-06-01
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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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
History

Mon, 29 Jun 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.4::appstream
cpe:/o:redhat:rhel_e4s:9.4::baseos
Vendors & Products Redhat rhel E4s
References

Fri, 26 Jun 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/o:redhat:rhel_eus:9.6::baseos
Vendors & Products Redhat rhel Eus
References

Thu, 25 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Title Guntls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal Gnutls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal
References

Wed, 24 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat discovery
CPEs cpe:/a:redhat:discovery:2::el9
Vendors & Products Redhat discovery
References

Tue, 16 Jun 2026 22:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
Redhat rhui
CPEs cpe:/a:redhat:rhui:5::el9
cpe:/o:redhat:enterprise_linux_eus:10.0
Vendors & Products Redhat enterprise Linux Eus
Redhat rhui
References

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu gnutls
Redhat hardened Images
Redhat openshift Container Platform
Vendors & Products Gnu
Gnu gnutls
Redhat hardened Images
Redhat openshift Container Platform

Tue, 02 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
References

Tue, 02 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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'}


Subscriptions

Gnu Gnutls
Redhat Discovery Enterprise Linux Enterprise Linux Eus Hardened Images Hummingbird Openshift Openshift Container Platform Rhel E4s Rhel Eus Rhui
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-29T10:18:07.431Z

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

Link: CVE-2026-5419

cve-icon Vulnrichment

Updated: 2026-06-02T12:35:34.819Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-06-02T17:16:37.793

Link: CVE-2026-5419

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T20:52:43Z

Weaknesses