{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47936 exists.","fix":"No fix has been published for CVE-2021-47936 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47936 is a critical vulnerability in OpenCATS, published on 10 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-47936 and fix it if it is affected.\n\nWhat it is: CVE-2021-47936 is a critical vulnerability in OpenCATS, published on 10 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47936 exists.\n\nAffected product: OpenCATS. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-47936/ (Markdown: https://insights.sbomify.com/CVE-2021-47936/index.md)","id":"CVE-2021-47936","markdown":"https://insights.sbomify.com/CVE-2021-47936/index.md","name":"CVE-2021-47936","record":{"aliases":["GHSA-6w77-cp2c-mfxq"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenCATS ATS","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code by uploading malicious PHP files via the resume upload feature in OpenCATS.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"OpenCATS 0.9.4 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary commands by uploading malicious PHP files disguised as resume attachments. Attackers can upload PHP payloads through the careers job application endpoint and execute system commands via POST requests to the uploaded file in the upload directory.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"OpenCATS 0.9.4 Remote Code Execution via Resume Upload","id":"CVE-2021-47936","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload","id":"CVE-2021-47937"},"packages":[],"prev":{"headline":"Sentry 8.2.0 Remote Code Execution via Pickle Deserialization","id":"CVE-2021-47935"},"products":["OpenCATS"],"published":"2026-05-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Opencats"]},"summary":"Unauthenticated attackers can execute arbitrary code by uploading malicious PHP files via the resume upload feature in OpenCATS.","url":"https://insights.sbomify.com/CVE-2021-47936/"}