CVE-2026-61560

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Source
https://cve.org/CVERecord?id=CVE-2026-61560
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61560.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-61560
Aliases
Published
2026-09-15T21:09:00Z
Modified
2026-10-28T02:31:11Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
@zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover
Details

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode (SSE=true) exposes all MCP tools without any authentication. The upload_markdown tool reads arbitrary files from the server's local filesystem via an unsanitized file_path parameter and uploads them to a GitLab project. Combined, any unauthenticated network-reachable attacker can read /proc/self/environ to steal the server's GITLAB_PERSONAL_ACCESS_TOKEN and achieve full GitLab account takeover. This is the default configuration for Docker deployments. Version 2.1.27 contains a patch.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-22"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61560.json"
}
References

Affected packages

Git / github.com/zereight/gitlab-mcp

Affected ranges

Type
GIT
Repo
https://github.com/zereight/gitlab-mcp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b5b4c3370f8ef366d3e7a1ba43aebedc014f0b08
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.1.27"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.1.27"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

1.*
1.0.32
1.0.60
1.0.62
1.0.63
Other
v
v1.*
v1.0.34
v1.0.36
v1.0.37
v1.0.38
v1.0.39
v1.0.40
v1.0.42
v1.0.45
v1.0.46
v1.0.47
v1.0.48
v1.0.50
v1.0.52
v1.0.53
v1.0.54
v1.0.56
v1.0.57
v1.0.59
v1.0.63
v1.0.64
v1.0.65
v1.0.72
v1.0.73
v1.0.76
v2.*
v2.0.10
v2.0.11
v2.0.12
v2.0.13
v2.0.14
v2.0.15
v2.0.16
v2.0.17
v2.0.18
v2.0.19
v2.0.20
v2.0.21
v2.0.22
v2.0.23
v2.0.24
v2.0.25
v2.0.28
v2.0.3
v2.0.30
v2.0.32
v2.0.33
v2.0.34
v2.0.35
v2.0.36
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.9
v2.1.0
v2.1.1
v2.1.10
v2.1.11
v2.1.12
v2.1.13
v2.1.14
v2.1.15
v2.1.16
v2.1.17
v2.1.18
v2.1.19
v2.1.2
v2.1.20
v2.1.21
v2.1.22
v2.1.23
v2.1.24
v2.1.25
v2.1.26
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61560.json"