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

Quick assessment

Affected
Graylog2 graylog2-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Graylog 是一个免费且开源的日志管理平台。在 7.1.0 至 7.1.4 以及 7.2.0-alpha.2 版本中，位于 中的 System Catalog 实体标题端点允许已认证用户请求组合显示字段，但未验证所选的每个字段是否可读。因此，用户可以获取受保护的值，包括可读用户记录中的密码哈希值；普通用户仅能访问其被授权的用户记录，而管理员则可以获取所有用户的密码哈希值。该问题已在 7.1.4 和 7.2.0-alpha.2 版本中修复。

CVSS 5.0 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
Graylog2 graylog2-server >= 7.1.0, < 7.1.4 affected
>= 7.2.0-alpha.1, < 7.2.0-alpha.2 affected
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I. Basic Information for CVE-2026-55425

Vulnerability Information
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Vulnerability Title
Graylog: System Catalog titles endpoint can be used to retrieve values of protected database fields
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
故意性的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Graylog2 graylog2-server >= 7.1.0, < 7.1.4 -

II. Public POCs for CVE-2026-55425

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III. Intelligence Information for CVE-2026-55425

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Patches & Fixes for CVE-2026-55425 (3)

Vendor Advisories for CVE-2026-55425 (1)

Vendor Pages for CVE-2026-55425 (2)

Same Patch Batch · Graylog2 · 2026-08-28 · 3 CVEs total

CVE-2026-55841 7.5 HIGH Graylog: Fortigate syslog message parser can be exploited to modify or delete fields from
CVE-2026-55867 5.3 MEDIUM Graylog token revocation endpoint allows authenticated users to delete other users’ access

IV. Related Vulnerabilities

Same product: graylog2-server
Same vendor: Graylog2
Same weakness: CWE-213

V. Comments for CVE-2026-55425

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