CVE-2026-5260
8.2
HIGH
CVSS 3.1
EPSS 0.23%
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.
How to fix CVE-2026-5260
To remediate CVE-2026-5260, upgrade the affected package to a fixed version below.
- Alpine/gnutls—upgrade to 3.8.13-r0 or later
- —upgrade to 3.7.1-5+deb11u10 or later
Is CVE-2026-5260 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.8.13-r0
- from 0, < 3.7.1-5+deb11u10
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |