CVE-2026-50143

{"id": "CVE-2026-50143", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50143", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-18T19:30:04.304975Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "apify", "product": "apify-mcp-server", "versions": [{"status": "affected", "version": "< 0.10.11"}]}]}], "published": "2026-08-18T18:17:53.227", "references": [{"url": "https://github.com/apify/apify-mcp-server/commit/ef686d77da3d3c86c30b2ae24218d756aa38e09c", "source": "security-advisories@github.com"}, {"url": "https://github.com/apify/apify-mcp-server/pull/927", "source": "security-advisories@github.com"}, {"url": "https://github.com/apify/apify-mcp-server/releases/tag/v0.10.11", "source": "security-advisories@github.com"}, {"url": "https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm", "source": "security-advisories@github.com"}, {"url": "https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled webServerMcpPath from an Actor definition without verifying the resulting origin, allowing a malicious Actor publisher to use a userinfo-style authority value to redirect connectMCPClient to a third-party host. The call-actor, fetch-actor-details, and actor-mcp tool-loading paths pass this URL to transports in src/mcp/client.ts that attach the victim Authorization bearer token, exposing the Apify API token and enabling access to Actors, stored data, and billable compute. A victim must invoke or inspect the attacker-controlled Actor. This issue is fixed in version 0.10.11."}], "lastModified": "2026-08-18T20:17:16.040", "sourceIdentifier": "security-advisories@github.com"}