{"answers":{"affected":"2 open source packages ship an affected version, including forkcms/forkcms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-28931 in the wild and no public exploit code.","fix":"Upgrade forkcms/forkcms to 5.9.3 or later.","what":"CVE-2021-28931 is a high-severity vulnerability in n/a, published on 7 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-28931 and fix it if it is affected.\n\nWhat it is: CVE-2021-28931 is a high-severity vulnerability in n/a, published on 7 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-28931 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- forkcms/forkcms (Packagist): affected all versions; fixed in 5.9.3\n- forkcms/forkcms (Packagist): affected all versions; fixed in 5.9.3\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-2021-28931/ (Markdown: https://insights.sbomify.com/CVE-2021-28931/index.md)","id":"CVE-2021-28931","markdown":"https://insights.sbomify.com/CVE-2021-28931/index.md","name":"CVE-2021-28931","record":{"aliases":["GHSA-748f-wv76-x9hg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Fork CMS","requires_auth":"low_privilege","summary":"Attackers can upload malicious zip files to the Themes panel to create or replace arbitrary files, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fork_cms","vendor":"fork-cms"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/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":"Arbitrary file upload vulnerability in Fork CMS 5.9.2 allows attackers to create or replace arbitrary files in the /themes directory via a crafted zip file uploaded to the Themes panel.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Arbitrary file upload in Fork CMS","id":"CVE-2021-28931","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"file_upload","year":"2021"},"n_packages":2,"n_references":2,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-28935"},"packages":[{"ecosystem":"Packagist","fixed":["5.9.3"],"introduced":["0"],"last_affected":[],"package":"forkcms/forkcms","purl":null,"source":"GHSA-748f-wv76-x9hg"},{"ecosystem":"Packagist","fixed":["5.9.3"],"introduced":["0"],"last_affected":[],"package":"forkcms/forkcms","purl":"pkg:composer/forkcms/forkcms","source":"GHSA-748f-wv76-x9hg"}],"prev":{"headline":"Command injection in n/a","id":"CVE-2021-28927"},"products":["n/a"],"published":"2021-07-07","related":[{"cvss_score":9.8,"headline":"Spoon Library as used in Fork CMS allows PHP object injection","id":"CVE-2019-15521","kev_date_added":null,"published":"2019-08-26"},{"cvss_score":9.6,"headline":"SQL Injection in forkcms/forkcms","id":"CVE-2022-0153","kev_date_added":null,"published":"2022-03-24"},{"cvss_score":9,"headline":"SQL injection through marking blog comments on bulk as spam in forkcms/forkcms","id":"CVE-2022-1064","kev_date_added":null,"published":"2022-03-25"},{"cvss_score":8.8,"headline":"Cross-Site Request Forgery in forkcms","id":"CVE-2020-23264","kev_date_added":null,"published":"2021-05-06"},{"cvss_score":8.8,"headline":"Deserialization in n/a","id":"CVE-2020-24036","kev_date_added":null,"published":"2021-03-04"},{"cvss_score":8.8,"headline":"Cross-Site Request Forgery in ForkCMS","id":"CVE-2020-23960","kev_date_added":null,"published":"2021-01-11"}],"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can upload malicious zip files to the Themes panel to create or replace arbitrary files, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2021-28931/"}