{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47964 exists.","fix":"No fix has been published for CVE-2021-47964 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47964 is a high-severity code injection vulnerability in Schlix CMS, published on 15 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-47964 and fix it if it is affected.\n\nWhat it is: CVE-2021-47964 is a high-severity code injection vulnerability in Schlix CMS, published on 15 May 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-2021-47964 exists.\n\nAffected product: Schlix CMS. 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-2021-47964/ (Markdown: https://insights.sbomify.com/CVE-2021-47964/index.md)","id":"CVE-2021-47964","markdown":"https://insights.sbomify.com/CVE-2021-47964/index.md","name":"CVE-2021-47964","record":{"aliases":["GHSA-r3mq-4wxp-p8vq"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Schlix CMS","requires_auth":"low_privilege","summary":"Authenticated attackers can execute arbitrary PHP code by uploading malicious extension packages in Schlix CMS.","user_interaction":"not_required","vuln_class":"code_injection"},"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-94","name":"Improper Control of Generation of Code"}],"description":"Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc file and trigger execution by accessing the About tab of the installed extension.","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":"Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager","id":"CVE-2021-47964","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"WordPress Plugin WP Super Edit 2.5.4 Unrestricted File Upload","id":"CVE-2021-47965"},"packages":[],"prev":{"headline":"Anote 1.0 Persistent Cross-Site Scripting Leading to Code Execution","id":"CVE-2021-47963"},"products":["Schlix CMS"],"published":"2026-05-15","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":"2026-05-18","vendors":["Schlix"]},"summary":"Authenticated attackers can execute arbitrary PHP code by uploading malicious extension packages in Schlix CMS.","url":"https://insights.sbomify.com/CVE-2021-47964/"}