{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-24857 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-24857 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-24857 is a critical unsafe deserialization vulnerability in Unknown ToTop Link, published on 13 Dec 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-2021-24857 and fix it if it is affected.\n\nWhat it is: CVE-2021-24857 is a critical unsafe deserialization vulnerability in Unknown ToTop Link, published on 13 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-24857 in the wild and no public exploit code.\n\nAffected product: Unknown ToTop Link. 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-2021-24857/ (Markdown: https://insights.sbomify.com/CVE-2021-24857/index.md)","id":"CVE-2021-24857","markdown":"https://insights.sbomify.com/CVE-2021-24857/index.md","name":"CVE-2021-24857","record":{"aliases":["GHSA-q5c4-rqq9-f524"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can achieve code execution via PHP object injection in the ToTop Link WordPress plugin by exploiting unsafe deserialization of user input.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[{"product":"totop_link","vendor":"nocean"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"The ToTop Link WordPress plugin through 1.7.1 passes base64 encoded user input to the unserialize() PHP function, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"ToTop Link \u003c= 1.7.1 - Unauthenticated PHP Object Injection","id":"CVE-2021-24857","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"WP Cookie User Info \u003c 1.0.9 - Admin+ SQL Injection","id":"CVE-2021-24858"},"packages":[],"prev":{"headline":"Shared Files \u003c 1.6.61 - Admin+ Stored Cross-Site Scripting","id":"CVE-2021-24856"},"products":["ToTop Link"],"published":"2021-12-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":["Unknown"]},"summary":"Unauthenticated attackers can achieve code execution via PHP object injection in the ToTop Link WordPress plugin by exploiting unsafe deserialization of user input.","url":"https://insights.sbomify.com/CVE-2021-24857/"}