CVE-2026-5260

—

CVSS 3.1

8.2 high

EPSS

<1%p52

Published

May 26, 2026 (May 26, 2026)

Modified

Sep 3, 2026

Description

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.

Weakness: CWE-126
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.7%)

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