CVE-2026-5260

8.2 HIGH 0.8% exploit odds No fix listed Disclosure Server

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 0.8% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-05-26 22:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-05 21:18 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.8% in the next 30 days (EPSS).
Severity: 8.2 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2026-05-26 22:16 UTC
Last modified: 2026-11-05 21:18 UTC
Exploit probability: 0.8% · EPSS, next 30 days
Weakness: CWE-126
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 8.2

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-5260.md and follow it. Check whether this project is affected by CVE-2026-5260. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record