What is CVE-2026-1435?

CVE-2026-1435 is a critical-severity vulnerability in Graylog, classified under Insufficient Session Expiration. CVSS score: 9.8/10. Published 2026-02-18.

How severe is CVE-2026-1435?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Graylog

CVE-2026-1435

Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of session invalidation after new logins. The application generates a new 'sessionId' each time a user authenticates, but d…

EPSS: 0.004 (28.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Graylog — versions 2.2.3
Graylog Web Interface — versions 2.2.3

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

cve-coordination@incibe.es (Third Party Advisory, patch)

Frequently asked questions

What is CVE-2026-1435?: CVE-2026-1435 is a critical-severity vulnerability in Graylog, classified under Insufficient Session Expiration. CVSS score: 9.8/10. Published 2026-02-18.
How severe is CVE-2026-1435?: Critical severity. CVSS v3 base score is 9.8 out of 10.