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.
History

Wed, 18 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 18 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Graylog graylog
CPEs cpe:2.3:a:graylog:graylog:2.2.3:*:*:*:*:*:*:*
Vendors & Products Graylog graylog
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 18 Feb 2026 13:45:00 +0000

Type Values Removed Values Added
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.
Title Incorrect management of session invalidation vulnerability in Graylog Web Interface
First Time appeared Graylog
Graylog graylog Web Interface
Weaknesses CWE-613
CPEs cpe:2.3:a:graylog:graylog_web_interface:2.2.3:*:*:*:*:*:*:*
Vendors & Products Graylog
Graylog graylog Web Interface
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: INCIBE

Published: 2026-02-18T13:08:36.348Z

Updated: 2026-02-18T20:24:40.349Z

Reserved: 2026-01-26T13:20:06.891Z

Link: CVE-2026-1435

cve-icon Vulnrichment

Updated: 2026-02-18T20:24:28.278Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-18T14:16:05.700

Modified: 2026-02-18T20:22:51.750

Link: CVE-2026-1435

cve-icon Redhat

No data.