{"answers":{"affected":"2 open source packages ship an affected version, including studio-42/elfinder. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-23394 exists.","fix":"Upgrade studio-42/elfinder to 2.1.58 or later.","what":"CVE-2021-23394 is a high-severity vulnerability in studio-42/elfinder, published on 13 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-23394 and fix it if it is affected.\n\nWhat it is: CVE-2021-23394 is a high-severity vulnerability in studio-42/elfinder, published on 13 Jun 2021. 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-2021-23394 exists.\n\nAffected packages and fixed versions:\n- studio-42/elfinder (Packagist): affected all versions; fixed in 2.1.58\n- studio-42/elfinder (Packagist): affected all versions; fixed in 2.1.58\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-2021-23394/ (Markdown: https://insights.sbomify.com/CVE-2021-23394/index.md)","id":"CVE-2021-23394","markdown":"https://insights.sbomify.com/CVE-2021-23394/index.md","name":"CVE-2021-23394","record":{"aliases":["GHSA-qm58-cvvm-c5qr","SNYK-PHP-STUDIO42ELFINDER-1290554"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"PHP file manager","requires_auth":"none","summary":"Attackers can achieve remote code execution by uploading malicious .phar files if the server is configured to parse them as PHP.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"elfinder","vendor":"std42"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"The package studio-42/elfinder before 2.1.58 are vulnerable to Remote Code Execution (RCE) via execution of PHP code in a .phar file. NOTE: This only applies if the server parses .phar files as PHP.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":"2025-11-30","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":1,"refs":[{"date":"2025-11-30T05:42:53Z","kind":"github_poc","ref":"https://github.com/0xnemian/CVE-2021-23394","stars":0,"title":"Docker container to setup a vulnerable elfinder version on both nginx and apache servers. Can be used to test vulnerability POC"},{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-23394.yaml","stars":null,"title":"elFinder \u003c 2.1.58 - Remote Code Execution"}],"tier":"weaponised"},"has_fix":true,"headline":"Remote Code Execution (RCE)","id":"CVE-2021-23394","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"file_upload","year":"2021"},"n_packages":2,"n_references":5,"next":{"headline":"Prototype Pollution","id":"CVE-2021-23395"},"packages":[{"ecosystem":"Packagist","fixed":["2.1.58"],"introduced":["0"],"last_affected":[],"package":"studio-42/elfinder","purl":null,"source":"GHSA-qm58-cvvm-c5qr"},{"ecosystem":"Packagist","fixed":["2.1.58"],"introduced":["0"],"last_affected":[],"package":"studio-42/elfinder","purl":"pkg:composer/studio-42/elfinder","source":"GHSA-qm58-cvvm-c5qr"}],"prev":{"headline":"Open Redirect","id":"CVE-2021-23393"},"products":["studio-42/elfinder"],"published":"2021-06-13","related":[{"cvss_score":9.8,"headline":"File upload in n/a","id":"CVE-2023-52044","kev_date_added":null,"published":"2024-10-31"},{"cvss_score":9.8,"headline":"Studio 42 elFinder vulnerable to Incorrect Access Control","id":"CVE-2024-38909","kev_date_added":null,"published":"2024-07-30"},{"cvss_score":9.8,"headline":"RCE in Studio-42 elFinder on Windows before 2.1.61","id":"CVE-2022-27115","kev_date_added":null,"published":"2022-04-11"},{"cvss_score":9.8,"headline":"elFinder Unrestricted File Upload vulnerability","id":"CVE-2021-43421","kev_date_added":null,"published":"2022-04-07"},{"cvss_score":9.8,"headline":"Multiple vulnerabilities leading to RCE","id":"CVE-2021-32682","kev_date_added":null,"published":"2021-06-14"},{"cvss_score":9.8,"headline":"elFinder command injection vulnerability in the PHP connector","id":"CVE-2019-9194","kev_date_added":null,"published":"2019-02-26"},{"cvss_score":9.1,"headline":"Path Traversal in Studio-42 elFinder through 2.1.60","id":"CVE-2022-26960","kev_date_added":null,"published":"2022-03-21"}],"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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["n/a"]},"summary":"Attackers can achieve remote code execution by uploading malicious .phar files if the server is configured to parse them as PHP.","url":"https://insights.sbomify.com/CVE-2021-23394/"}