CVE-2026-61559 / CVE-2026-61568: @zereight/mcp-gitlab SSRF token theft and DNS rebinding
- Product
- @zereight/mcp-gitlab (npm)
- CVE
- CVE-2026-61559, CVE-2026-61568
- Affected
- < 2.1.30
- Fixed in
- 2.1.30
Last verified against sources: October 16, 2026
Am I affected?
@zereight/mcp-gitlab (npm): affected < 2.1.30. Fixed in 2.1.30.
What to do now
- Upgrade @zereight/mcp-gitlab to 2.1.30 or later. [2]
General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.
What happened
- According to GitHub Advisory Database's advisory (Sept 15, 2026), when ENABLE_DYNAMIC_API_URL=true was set, @zereight/mcp-gitlab used the X-GitLab-API-URL request header as the base URL with no allowlist and attached the victim's Private-Token (CVE-2026-61559). [1]
- Its Streamable HTTP MCP endpoint also lacked Host and Origin allowlists, allowing DNS rebinding from a browser (CVE-2026-61568). [2]
Impact
What was done
Sources
- GHSA-2h44-8472-frjj (CVE-2026-61559) — GitHub Advisory Database
- GHSA-vmp7-252j-cwp7 (CVE-2026-61568) — GitHub Advisory Database
Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.
Share advisory brief with your team
Copy a plain-text summary for Slack, GitHub issues, or team security channels.
[CVE-2026-61559, CVE-2026-61568] CVE-2026-61559 / CVE-2026-61568: @zereight/mcp-gitlab SSRF token theft and DNS rebinding
Product: @zereight/mcp-gitlab (npm) | Affected: < 2.1.30 | Fixed in: 2.1.30
Summary: According to GitHub Advisory Database's advisory (Sept 15, 2026), when ENABLE_DYNAMIC_API_URL=true was set, @zereight/mcp-gitlab used the X-GitLab-API-URL request header as the base URL with no allowlist and attached the victim's Private-Token (CVE-2026-61559).
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/09/cve-2026-61559-61568-mcp-gitlab-ssrf-dns-rebindingCorrections
Report an error or request a correction. We review requests within 5 business days and add a dated correction note.
Discussions for CVE-2026-61559, CVE-2026-61568
Ask questions or share configuration tips. Governed by our Community Rules & Terms.
No posts match this filter yet.
Be the first to ask a question or share a working tip.