Is CVE-2026-1436 actively exploited?

No active exploitation of CVE-2026-1436 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-1436 be exploited remotely?

Yes. CVE-2026-1436 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-1436?

CVE-2026-1436 has a CVSS score of 6.5 (MEDIUM) and an EPSS exploitation probability of 0.03%.

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MEDIUM

CVE-2026-1436

CWE-639Published: February 18, 2026· Updated: Feb 18, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.9th

Official Description

Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be listed and sensitive third-party information to be accessed, such as names, email addresses, internal identifiers, and last activity. The endpoint 'http://<IP>:12900/users/<my_user>' does not implement object-level authorization validations.

NVD Source

Technical Analysis

CVE-2026-1436 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.