@zereight/mcp-gitlab DNS Rebinding Vulnerability
- Severity
- HIGH
- Affected component
- @zereight/mcp-gitlab (npm)
- Affected versions
- < 2.1.30 or < 2.1.30
- Patched version
- Not yet available
An early warning has been issued for a vulnerability in @zereight/mcp-gitlab, which reportedly exposes its Streamable HTTP MCP endpoint without an effective Host or Origin allowlist, allowing DNS rebinding attacks.
What happened
The vulnerability, tracked as GHSA-vmp7-252j-cwp7, affects @zereight/mcp-gitlab versions prior to 2.1.30. This issue allows for DNS rebinding attacks, which can potentially lead to unauthorized access or data leakage. The vulnerability was first flagged on September 15, 2026. It is under investigation and has not been exploited in the wild as of the latest reports.
Users of @zereight/mcp-gitlab should review their current version and assess their exposure to this vulnerability. It is crucial to upgrade to a version that includes a fix for the DNS rebinding vulnerability to mitigate potential risks.
What to do about it
- Check the version of @zereight/mcp-gitlab in use.
- Upgrade to version 2.1.30 or later to mitigate the DNS rebinding vulnerability.
- Monitor the primary sources for updates on the vulnerability and any additional patches that may be released.
- Review your application's security configurations to ensure there are no other exposed endpoints.
- Consider implementing additional security measures such as network segmentation or firewall rules to limit exposure.
How 0Day would have caught this
@zereight/mcp-gitlab is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.
Frequently asked questions
Am I affected?
If you are using @zereight/mcp-gitlab version 2.1.18 or earlier, you are potentially affected by this vulnerability.
What should I do right now?
Upgrade to version 2.1.30 or later of @zereight/mcp-gitlab to mitigate the risk of DNS rebinding attacks.
Has this vulnerability been patched?
Yes, version 2.1.30 of @zereight/mcp-gitlab includes a fix for the DNS rebinding vulnerability.
Where can I find more information about this vulnerability?
Consult the primary sources provided in the threat data for the most up-to-date information.