🛡️ CVE-2026-1435
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-613 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 does not invalidate previously issued session identifiers, which remain valid even after multiple consecutive logins by the same user. As a result, a stolen or leaked 'sessionId' can continue to be used to authenticate valid requests. Exploiting this vulnerability would allow an attacker with access to the web service/API network (port 9000 or HTTP/S endpoint of the server) to reuse an old session token to gain unauthorized access to the application, interact with the API/web, and compromise the integrity of the affected account.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-613
Public Exploit ✅ No
Source NVD
Published 2026-02-18
Updated 2026-06-02
Modified 2026-02-18
Fix URL N/A

Affected Packages

Software From version Fixed in
graylog

Similar Threats

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