{"answers":{"affected":"2 open source packages ship an affected version, including @apify/actors-mcp-server.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50143 exists.","fix":"Upgrade @apify/actors-mcp-server to 0.10.11 or later.","what":"CVE-2026-50143 is a high-severity server-side request forgery vulnerability in apify-mcp-server, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-50143 and fix it if it is affected.\n\nWhat it is: CVE-2026-50143 is a high-severity server-side request forgery vulnerability in apify-mcp-server, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50143 exists.\n\nAffected packages and fixed versions:\n- @apify/actors-mcp-server (npm): affected all versions; fixed in 0.10.11\n- @apify/actors-mcp-server (npm): affected all versions; fixed in 0.10.11\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-50143/ (Markdown: https://insights.sbomify.com/CVE-2026-50143/index.md)","id":"CVE-2026-50143","markdown":"https://insights.sbomify.com/CVE-2026-50143/index.md","name":"CVE-2026-50143","record":{"aliases":["GHSA-6gr2-qh89-hxwm"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Apify MCP server","requires_auth":"none","summary":"A malicious Actor definition can redirect MCP client connections to an attacker-controlled host, leaking the victim's Apify API token and granting unauthorized access to data and compute resources.","user_interaction":"required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Actor MCP path authority injection leaks Apify token","id":"CVE-2026-50143","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id","id":"CVE-2026-50144"},"packages":[{"ecosystem":"npm","fixed":["0.10.11"],"introduced":["0"],"last_affected":[],"package":"@apify/actors-mcp-server","purl":null,"source":"GHSA-6gr2-qh89-hxwm"},{"ecosystem":"npm","fixed":["0.10.11"],"introduced":["0"],"last_affected":[],"package":"@apify/actors-mcp-server","purl":"pkg:npm/%40apify/actors-mcp-server","source":"GHSA-6gr2-qh89-hxwm"}],"prev":{"headline":"libheif: unbounded heap allocation in HEIF sequence parser (stsz fixed-size mode missing bound check)","id":"CVE-2026-50142"},"products":["apify-mcp-server"],"published":"2026-08-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-18","vendors":["apify"]},"summary":"A malicious Actor definition can redirect MCP client connections to an attacker-controlled host, leaking the victim's Apify API token and granting unauthorized access to data and compute resources.","url":"https://insights.sbomify.com/CVE-2026-50143/"}