CVE-2026-55425: Graylog Server System Catalog Titles Endpoint Can Vulnerability
MODERATECVE-2026-55425 is a MODERATE (CVSS 5.0) system catalog titles endpoint can vulnerability (CWE-213: Exposure of Sensitive Information Due to Incompatible Policies) affecting Graylog Server libraries in the Maven ecosystem. The issue involves system catalog titles endpoint can be used to retrieve values of protected database fields. Remediation is available by upgrading affected packages to version 7.1.4.
CVE-2026-55425 at a Glance
Security Impact
CVSS: 5.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).
How to Fix CVE-2026-55425
To remediate this vulnerability, upgrade all affected Graylog Server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.graylog2</groupId>
<artifactId>graylog2-server</artifactId>
<version>7.1.4</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.graylog2How to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-55425, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.graylog2Analyze the terminal output to locate any version of Graylog Server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.1.4), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.graylog2 command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-213: Exposure of Sensitive Information Due to Incompatible Policies, where the product's intended functionality exposes information to certain actors in accordance with the developer's security policy, but this information is regarded as sensitive according to the intended security policies of other stakeholders such as the product's administrator, users, or others whose information is being processed. In Graylog Server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-55425 Affected Graylog Server Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.graylog2:graylog2-server
|
Maven |
≥ 7.1.0
< 7.1.4
|
7.1.4
|
References
Frequently Asked Questions
What is CVE-2026-55425?
Which Graylog Server versions are affected?
What version fixes CVE-2026-55425?
Is graylog2-server affected?
What is the CVSS score of CVE-2026-55425?
What CWE is associated with CVE-2026-55425?
How can I check Maven dependencies for CVE-2026-55425?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-q79r-r9xg-r863",
"modified" : "2026-08-28T18:09:29Z",
"published" : "2026-08-28T18:09:29Z",
"aliases" : [ "CVE-2026-55425" ],
"summary" : "Graylog Server: System Catalog titles endpoint can be used to retrieve values of protected database fields",
"details" : "### Impact\n\nA vulnerability was found in Graylog's API endpoint for retrieving system catalog entity titles. Authenticated users could retrieve database fields of supported entities by sending a custom API request. These fields can include e.g. the password hash of a user (but not the password itself), which should not be returned through the API, regardless of the endpoint. Permission checks do still apply, so users can retrieve their own password hash, but not those of other users. The admin user (or any user with an admin role) can retrieve password hashes of all users.\n\n### Patches\n\nThis issue has been patched in Graylog `7.1.4`. In this version, an allow list will be used to check if protected fields are being accessed, refusing those requests. Affected users should upgrade to `7.1.4` or above to remediate the vulnerability.\n\n### Workarounds\n\nThere is no known workaround. Upgrading to a patched version is recommended.\n\n### Credits\n\nThanks to [Evelynkaz](https://github.com/Evelynkaz) for reporting.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.graylog2:graylog2-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.1.0"
}, {
"fixed" : "7.1.4"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 7.1.3"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-q79r-r9xg-r863"
}, {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/pull/26284"
}, {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/commit/1d1a91d99c3d2d8993e61c3c52344648163d3a21"
}, {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/commit/da7767a44233b6a683d0713eed08da31ce0e77b5"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/Graylog2/graylog2-server"
}, {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/releases/tag/7.1.4"
}, {
"type" : "WEB",
"url" : "https://github.com/Graylog2/graylog2-server/releases/tag/7.2.0-alpha.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-213" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-08-28T18:09:29Z",
"nvd_published_at" : null
}
}