GHSA-q79r-r9xg-r863 CVE-2026-55425
Graylog Server: System Catalog titles endpoint can be used to retrieve values of protected database fields
- Severity
- 5.0 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 0.41%
- Chance of exploitation in the next 30 days. Higher than 35.53% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-213 Exposure of Sensitive Information Due to Incompatible Policies
- Fix
7.1.4- Upgrade org.graylog2:graylog2-server to this version or later
Description
Impact
A 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.
Patches
This 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.
Workarounds
There is no known workaround. Upgrading to a patched version is recommended.
Credits
Thanks to Evelynkaz for reporting.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.graylog2:graylog2-server | >= 7.1.0, < 7.1.4 |
7.1.4 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.graylog2:graylog2-server Maven → 7.1.4
- maven
<dependency><groupId>org.graylog2</groupId><artifactId>graylog2-server</artifactId><version>7.1.4</version></dependency>- gradle
implementation("org.graylog2:graylog2-server:7.1.4")
Severity breakdown
CVSS 3.1 5.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Weakness
CWE-213: Exposure of Sensitive Information Due to Incompatible Policies
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.
References
Packages
Other links
- github.com/Graylog2/graylog2-server/security/advisories/GHSA-q79r-r9xg-r863
- github.com/Graylog2/graylog2-server/pull/26284
- github.com/Graylog2/graylog2-server/commit/1d1a91d99c3d2d8993e61c3c52344648163d…
- github.com/Graylog2/graylog2-server/commit/da7767a44233b6a683d0713eed08da31ce0e…
- github.com/Graylog2/graylog2-server/releases/tag/7.1.4
- github.com/Graylog2/graylog2-server/releases/tag/7.2.0-alpha.2
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-m9c2-85gv-8xr5 Graylog: Manager-to-Owner privilege escalation on saved searches and dashboards | Medium | Also affects org.graylog2:graylog2-server |
| GHSA-j769-9gv9-65gr Graylog token revocation endpoint allows authenticated users to delete other users’ access tokens | Medium | Also affects org.graylog2:graylog2-server |
| GHSA-gqr6-r77p-c2pj Fortigate syslog message parser can be exploited to modify or delete fields from the original message | High | Also affects org.graylog2:graylog2-server |
| GHSA-3m86-c9x3-vwm9 Graylog vulnerable to privilege escalation through API tokens | High | Also affects org.graylog2:graylog2-server |
| GHSA-76vf-mpmx-777j Graylog Allows Session Takeover via Insufficient HTML Sanitization | Medium | Also affects org.graylog2:graylog2-server |
| GHSA-q9q2-3ppx-mwqf Graylog Allows Stored Cross-Site Scripting via Files Plugin and API Browser | High | Also affects org.graylog2:graylog2-server |
| GHSA-q7g5-jq6p-6wvx Graylog's Authenticated HTTP inputs ingest message even if Authorization header is missing or has wrong value | Medium | Also affects org.graylog2:graylog2-server |
| GHSA-p6gg-5hf4-4rgj Graylog vulnerable to instantiation of arbitrary classes triggered by API request | High | Also affects org.graylog2:graylog2-server |
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