---
title: "CVE-2026-61559: @zereight/mcp-gitlab - Information Disclosure"
description: "@zereight/mcp-gitlab < 2.1.27 contains an information disclosure caused by lack of hostname restriction on X-GitLab-API-URL header, letting attackers receiving victim's Private-Token via attacker-controlled API URL, exploit requires network access to send crafted requests."
url: https://panop.io/threat-heartbeat/CVE-2026-61559/
---

# CVE-2026-61559 @zereight/mcp-gitlab - Information Disclosure

@zereight/mcp-gitlab < 2.1.27 contains an information disclosure caused by lack of hostname restriction on X-GitLab-API-URL header, letting attackers receiving victim's Private-Token via attacker-controlled API URL, exploit requires network access to send crafted requests.

CVSS base score 9.6 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.43% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-61559)

## Details

Type

Information Disclosure

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to version 2.1.27 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-61559](https://nvd.nist.gov/vuln/detail/CVE-2026-61559)
- [https://github.com/zereight/gitlab-mcp/commit/6ffb4cc70706fd05b1ab80901676bc2998b6db6d](https://github.com/zereight/gitlab-mcp/commit/6ffb4cc70706fd05b1ab80901676bc2998b6db6d)
- [https://github.com/zereight/gitlab-mcp/pull/625](https://github.com/zereight/gitlab-mcp/pull/625)
- [https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.27](https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.27)
- [https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-2h44-8472-frjj](https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-2h44-8472-frjj)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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