@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.
CVE-2026-61568
CRITICALPre-NVD 9.69.6—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.6
- EG Score
- 9.6(medium)
- EG Risk
- 43(Track)EG Risk 43/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity96% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 26%
- KEV
- Not listed
Published
September 15, 2026
Last Modified
September 16, 2026
Advisory Details (4)
Auto-updated Sep 17, 2026🔬 Proof of concept available. Patch available. Sources: github_pr, github_release, github, github_commit.
github Patch Available🟡 PoC Available
DNS rebinding reaches local Streamable HTTP MCP transport · Advisory · zereight/gitlab-mcp · GitHub
https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-vmp7-252j-cwp7github_release Patch Available
v2.1.30
Patch available: zereight/gitlab-mcp v2.1.30
https://github.com/zereight/gitlab-mcp/releases/tag/v2.1.30github_pr Patch Available
fix: guard Streamable HTTP host headers
Patch available: zereight/gitlab-mcp v2.1.33 (PR #555 merged 2026-07-05)
https://github.com/zereight/gitlab-mcp/pull/555github_commit Patch Available
commit 52207c6f5c0e (zereight/gitlab-mcp)
Patch available: zereight/gitlab-mcp v2.1.33 (contains commit 52207c6f5c0e)
https://github.com/zereight/gitlab-mcp/commit/52207c6f5c0e7a39e9235d491225edbb562a0290Vendor Advisories for CVE-2026-61568(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @zereight/mcp-gitlab | — | 2.1.30 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 9× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-18 21:14 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-17 23:45 UTCEG score recompute
- 2026-09-16 19:25 UTCEG score recompute
- 2026-09-16 14:27 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-15 21:18 UTCEG score recompute
- 2026-09-15 21:03 UTCEG score recompute
- 2026-09-15 21:02 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-61568?
CVE-2026-61568 is a critical vulnerability published on September 15, 2026. @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…
When was CVE-2026-61568 disclosed?
CVE-2026-61568 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61568 actively exploited?
CVE-2026-61568 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.5% of all scored CVEs.
What is the CVSS score of CVE-2026-61568?
CVE-2026-61568 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-61568?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61568, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-61568
Is Your Infrastructure Affected by CVE-2026-61568?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.