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MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`
MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`
Affected packages
- github.com/modelcontextprotocol/registry
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-rqv2-m695-f8j4
- https://nvd.nist.gov/vuln/detail/CVE-2026-44429
- https://github.com/modelcontextprotocol/registry/pull/1249
- https://github.com/modelcontextprotocol/registry/commit/78b7bbde07948049b916d76b4769faee461ff930
- https://github.com/modelcontextprotocol/registry
- https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7
Structured record: https://osv.dev/vulnerability/GHSA-rqv2-m695-f8j4
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