Auth bypass in Graylog
CVE-2025-53106
Graylog is a free and open log management platform. In versions 6.2.0 to before 6.2.4 and 6.3.0-alpha.1 to before 6.3.0-rc.2, Graylog users can gain elevated privileges by creating and using API tokens for the local Administrator or any other user for whom the malicious user knows the ID. For the attack to succeed, the attacker needs a user account in Graylog. They can then proceed to issue hand-crafted requests to the Graylog REST API and exploit a weak permission check for token creation. This issue has been patched in versions 6.2.4 and 6.3.0-rc.2. A workaround involves disabling the respective configuration found in System > Configuration > Users > "Allow users to create personal access tokens".
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Graylog — versions 6.3.0
- Graylog2 Graylog2-Server — versions >= 6.2.0, < 6.2.4, >= 6.3.0-alpha.1, < 6.3.0-rc.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-53106?
- CVE-2025-53106 is a high-severity vulnerability in Graylog, classified under Improper Authorization. CVSS score: 8.8/10. Published 2025-07-02.
- How severe is CVE-2025-53106?
- High severity. CVSS v3 base score is 8.8 out of 10.