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6 vulnerabilities found for gitlab-mcp by zereight
CVE-2026-61560 (GCVE-0-2026-61560)
Vulnerability from nvd – Published: 2026-09-15 21:09 – Updated: 2026-09-16 13:59
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover
Summary
`@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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 13:59 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/482 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/pull/554 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/pull/622 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
< 2.1.27
|
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}
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CVE-2026-61568 (GCVE-0-2026-61568)
Vulnerability from nvd – Published: 2026-09-15 20:56 – Updated: 2026-09-15 20:56
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport
Summary
`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch.
Severity
9.6 (Critical)
CWE
- CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/555 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/commit/522… | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
< 2.1.30
|
{
"containers": {
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"vendor": "zereight",
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}
],
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"tags": [
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}
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CVE-2026-61559 (GCVE-0-2026-61559)
Vulnerability from nvd – Published: 2026-09-15 20:58 – Updated: 2026-09-15 20:58
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab Vulnerable to Server-Side Request Forgery
Summary
`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Starting in version 0.0.1 and prior to version 2.1.27, when the environment variable `ENABLE_DYNAMIC_API_URL=true` is set, the server reads the `X-GitLab-API-URL` HTTP request header and uses it as the base URL for all outbound GitLab API calls made within that request. The server validates that the value is a well-formed URL (`new URL(dynamicApiUrl)`) but applies no allowlist or hostname restriction. The server then attaches the victim's `Private-Token` to every outbound fetch that uses the redirected URL. Any caller who can reach the HTTP transport can set `X-GitLab-API-URL` to an attacker-controlled host. The next GitLab API call the server makes delivers the victim's token to that host. Version 2.1.27 contains a patch.
Severity
9.6 (Critical)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/625 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/commit/6ff… | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
>= 0.0.1, < 2.1.27
|
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"vendor": "zereight",
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}
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},
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],
"url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-2h44-8472-frjj"
},
{
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"tags": [
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],
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},
{
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},
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"tags": [
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],
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"discovery": "UNKNOWN"
},
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CVE-2026-61560 (GCVE-0-2026-61560)
Vulnerability from cvelistv5 – Published: 2026-09-15 21:09 – Updated: 2026-09-16 13:59
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover
Summary
`@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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 13:59 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/482 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/pull/554 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/pull/622 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
< 2.1.27
|
{
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}
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],
"url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-cv3r-c5h8-f4g5"
},
{
"name": "https://github.com/zereight/gitlab-mcp/pull/482",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/pull/482"
},
{
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"tags": [
"x_refsource_MISC"
],
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},
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}
],
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"discovery": "UNKNOWN"
},
"title": "@zereight/mcp-gitlab\u0027s unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover"
}
},
"cveMetadata": {
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}
CVE-2026-61559 (GCVE-0-2026-61559)
Vulnerability from cvelistv5 – Published: 2026-09-15 20:58 – Updated: 2026-09-15 20:58
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab Vulnerable to Server-Side Request Forgery
Summary
`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Starting in version 0.0.1 and prior to version 2.1.27, when the environment variable `ENABLE_DYNAMIC_API_URL=true` is set, the server reads the `X-GitLab-API-URL` HTTP request header and uses it as the base URL for all outbound GitLab API calls made within that request. The server validates that the value is a well-formed URL (`new URL(dynamicApiUrl)`) but applies no allowlist or hostname restriction. The server then attaches the victim's `Private-Token` to every outbound fetch that uses the redirected URL. Any caller who can reach the HTTP transport can set `X-GitLab-API-URL` to an attacker-controlled host. The next GitLab API call the server makes delivers the victim's token to that host. Version 2.1.27 contains a patch.
Severity
9.6 (Critical)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/625 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/commit/6ff… | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
>= 0.0.1, < 2.1.27
|
{
"containers": {
"cna": {
"affected": [
{
"product": "gitlab-mcp",
"vendor": "zereight",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.0.1, \u003c 2.1.27"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Starting in version 0.0.1 and prior to version 2.1.27, when the environment variable `ENABLE_DYNAMIC_API_URL=true` is set, the server reads the `X-GitLab-API-URL` HTTP request header and uses it as the base URL for all outbound GitLab API calls made within that request. The server validates that the value is a well-formed URL (`new URL(dynamicApiUrl)`) but applies no allowlist or hostname restriction. The server then attaches the victim\u0027s `Private-Token` to every outbound fetch that uses the redirected URL. Any caller who can reach the HTTP transport can set `X-GitLab-API-URL` to an attacker-controlled host. The next GitLab API call the server makes delivers the victim\u0027s token to that host. Version 2.1.27 contains a patch."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.6,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-918",
"description": "CWE-918: Server-Side Request Forgery (SSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T20:58:41.639Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-2h44-8472-frjj",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-2h44-8472-frjj"
},
{
"name": "https://github.com/zereight/gitlab-mcp/pull/625",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/pull/625"
},
{
"name": "https://github.com/zereight/gitlab-mcp/commit/6ffb4cc70706fd05b1ab80901676bc2998b6db6d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/commit/6ffb4cc70706fd05b1ab80901676bc2998b6db6d"
},
{
"name": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.27",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.27"
}
],
"source": {
"advisory": "GHSA-2h44-8472-frjj",
"discovery": "UNKNOWN"
},
"title": "@zereight/mcp-gitlab Vulnerable to Server-Side Request Forgery"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-61559",
"datePublished": "2026-09-15T20:58:41.639Z",
"dateReserved": "2026-07-10T16:48:39.923Z",
"dateUpdated": "2026-09-15T20:58:41.639Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-61568 (GCVE-0-2026-61568)
Vulnerability from cvelistv5 – Published: 2026-09-15 20:56 – Updated: 2026-09-15 20:56
VLAI
EPSS
VEX
Title
@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport
Summary
`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch.
Severity
9.6 (Critical)
CWE
- CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/zereight/gitlab-mcp/security/a… | x_refsource_CONFIRM |
| https://github.com/zereight/gitlab-mcp/pull/555 | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/commit/522… | x_refsource_MISC |
| https://github.com/zereight/gitlab-mcp/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zereight | gitlab-mcp |
Affected:
< 2.1.30
|
{
"containers": {
"cna": {
"affected": [
{
"product": "gitlab-mcp",
"vendor": "zereight",
"versions": [
{
"status": "affected",
"version": "\u003c 2.1.30"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim\u0027s local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.6,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-350",
"description": "CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T20:56:11.723Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7"
},
{
"name": "https://github.com/zereight/gitlab-mcp/pull/555",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/pull/555"
},
{
"name": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290"
},
{
"name": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30"
}
],
"source": {
"advisory": "GHSA-vmp7-252j-cwp7",
"discovery": "UNKNOWN"
},
"title": "@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-61568",
"datePublished": "2026-09-15T20:56:11.723Z",
"dateReserved": "2026-07-10T16:48:39.924Z",
"dateUpdated": "2026-09-15T20:56:11.723Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}