CVE-2026-81093Apify Actors MCP Server before 0.9.12 Server-Side Request Forgery via get-html-skeleton
Updated under an hour ago ()
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It affects apify actors-mcp-server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The get-html-skeleton tool fetched a URL the caller supplied after checking only its syntax. The handler in src/tools/common/get_html_skeleton.ts validated the url argument with isValidHttpUrl from src/utils/generic.ts, which confirmed the string began with an http or https scheme and parsed as a URL and inspected neither the host name nor the address it resolves to. Loopback, link-local and private ranges therefore passed, including the address cloud providers use to serve instance metadata. The unchecked URL was handed to the web-browser actor and the fetched document was returned in the tool response, so any caller of the MCP server could make it request an endpoint reachable only from the host and read the result, including instance credentials. Version 0.9.12 removes the tool.
- CVSS
- 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
apify actors-mcp-server apify:actors_mcp_server (from the name) | before 0.9.12 | CNA record |
References
- https://github.com/apify/apify-mcp-serverproduct
- https://github.com/apify/apify-mcp-server/pull/572issue-tracking, patch
- https://github.com/apify/apify-mcp-server/security/advisories/GHSA-m28f-9v8h-gg2fvendor-advisory
- https://www.vulncheck.com/advisories/apify-actors-mcp-server-before-0.9.12-server-side-request-forgery-via-get-html-skeletonthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.