{"id":"CVE-2026-50143","state":"PUBLISHED","title":"Actor MCP path authority injection leaks Apify token","description":"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.","publishedAt":"2026-08-18T17:51:18.888Z","updatedAt":"2026-08-18T19:30:31.747Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["apify apify-mcp-server"],"affected":[{"vendor":"apify","product":"apify-mcp-server","versions":[{"version":"< 0.10.11","status":"affected"}]}],"references":["https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm","https://github.com/apify/apify-mcp-server/pull/927","https://github.com/apify/apify-mcp-server/commit/ef686d77da3d3c86c30b2ae24218d756aa38e09c","https://github.com/apify/apify-mcp-server/releases/tag/v0.10.11"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50143.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50143","state":"PUBLISHED","datePublished":"2026-08-18T17:51:18.888Z","dateUpdated":"2026-08-18T19:30:31.747Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T18:49:32.275Z"},"containers":{"cna":{"title":"Actor MCP path authority injection leaks Apify token","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."}],"affected":[{"vendor":"apify","product":"apify-mcp-server","versions":[{"version":"< 0.10.11","status":"affected"}]}],"references":[{"url":"https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm","name":"https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/apify/apify-mcp-server/pull/927","name":"https://github.com/apify/apify-mcp-server/pull/927","tags":["x_refsource_MISC"]},{"url":"https://github.com/apify/apify-mcp-server/commit/ef686d77da3d3c86c30b2ae24218d756aa38e09c","name":"https://github.com/apify/apify-mcp-server/commit/ef686d77da3d3c86c30b2ae24218d756aa38e09c","tags":["x_refsource_MISC"]},{"url":"https://github.com/apify/apify-mcp-server/releases/tag/v0.10.11","name":"https://github.com/apify/apify-mcp-server/releases/tag/v0.10.11","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-18T17:51:18.888Z"},"source":{"advisory":"GHSA-6gr2-qh89-hxwm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/apify/apify-mcp-server/security/advisories/GHSA-6gr2-qh89-hxwm","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-18T19:30:04.304975Z","id":"CVE-2026-50143","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-18T19:30:31.747Z"}}]}}}