{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47888 exists.","fix":"No fix has been published for CVE-2021-47888 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47888 is a high-severity vulnerability in The Textpattern Development Team Textpattern, published on 23 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-47888 and fix it if it is affected.\n\nWhat it is: CVE-2021-47888 is a high-severity vulnerability in The Textpattern Development Team Textpattern, published on 23 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47888 exists.\n\nAffected product: The Textpattern Development Team Textpattern. 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-2021-47888/ (Markdown: https://insights.sbomify.com/CVE-2021-47888/index.md)","id":"CVE-2021-47888","markdown":"https://insights.sbomify.com/CVE-2021-47888/index.md","name":"CVE-2021-47888","record":{"aliases":["GHSA-h3r5-68q9-fh3p"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Textpattern CMS","requires_auth":"low_privilege","summary":"Authenticated attackers can upload malicious PHP files to Textpattern CMS to execute arbitrary commands on the server.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"Textpattern versions prior to 4.8.3 contain an authenticated remote code execution vulnerability that allows logged-in users to upload malicious PHP files. Attackers can upload a PHP file with a shell command execution payload and execute arbitrary commands by accessing the uploaded file through a specific URL parameter.","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":"Textpattern 4.8.3 - Remote code execution","id":"CVE-2021-47888","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":"Softros LAN Messenger 9.6.4 - 'SoftrosSpellChecker' Unquoted Service Path","id":"CVE-2021-47889"},"packages":[],"prev":{"headline":"Print Job Accounting 4.4.10 - 'OkiJaSvc' Unquoted Service Path","id":"CVE-2021-47887"},"products":["Textpattern"],"published":"2026-01-23","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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-05","vendors":["The Textpattern Development Team"]},"summary":"Authenticated attackers can upload malicious PHP files to Textpattern CMS to execute arbitrary commands on the server.","url":"https://insights.sbomify.com/CVE-2021-47888/"}