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.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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/errata/RHSA-2026:58981
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-01 21:16

Updated : 2026-09-01 13:19

NVD link : CVE-2026-5419

Mitre link : CVE-2026-5419

CVE.ORG link : CVE-2026-5419

JSON object : View

Products Affected

No product.

CWE

CWE-208

Observable Timing Discrepancy

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"value": "CWE-208"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en gnutls. La verificaci\u00f3n del relleno PKCS#7, realizada durante el descifrado, no era de tiempo constante. Este canal lateral de temporizaci\u00f3n podr\u00eda permitir a un atacante remoto filtrar potencialmente informaci\u00f3n sensible sobre los bytes de relleno a trav\u00e9s de diferencias de temporizaci\u00f3n observables. Esta vulnerabilidad es una forma de revelaci\u00f3n de informaci\u00f3n."}], "lastModified": "2026-09-01T13:19:53.920", "sourceIdentifier": "secalert@redhat.com"}