{"answers":{"affected":"2 open source packages ship an affected version, including org.thymeleaf:thymeleaf-spring5. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-43466 in the wild and no public exploit code.","fix":"Upgrade org.thymeleaf:thymeleaf-spring5 to 3.0.13.RELEASE or later.","what":"CVE-2021-43466 is a critical code injection vulnerability in n/a, published on 9 Nov 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-2021-43466 and fix it if it is affected.\n\nWhat it is: CVE-2021-43466 is a critical code injection vulnerability in n/a, published on 9 Nov 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-2021-43466 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.thymeleaf:thymeleaf-spring5 (Maven): affected all versions; fixed in 3.0.13.RELEASE\n- org.thymeleaf:thymeleaf-spring5 (Maven): affected all versions; fixed in 3.0.13.RELEASE\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-2021-43466/ (Markdown: https://insights.sbomify.com/CVE-2021-43466/index.md)","id":"CVE-2021-43466","markdown":"https://insights.sbomify.com/CVE-2021-43466/index.md","name":"CVE-2021-43466","record":{"aliases":["GHSA-qcj6-jqrg-4wp2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java template engine","requires_auth":"none","summary":"Attackers can achieve remote code execution via template injection in the Thymeleaf Spring5 library.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"thymeleaf","vendor":"thymeleaf"}],"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-94","name":"Improper Control of Generation of Code"}],"description":"In the thymeleaf-spring5:3.0.12 component, thymeleaf combined with specific scenarios in template injection may lead to remote code execution.","ecosystems":["Maven"],"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":"Template injection in thymeleaf-spring5","id":"CVE-2021-43466","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Command injection in n/a","id":"CVE-2021-43469"},"packages":[{"ecosystem":"Maven","fixed":["3.0.13.RELEASE"],"introduced":["0"],"last_affected":[],"package":"org.thymeleaf:thymeleaf-spring5","purl":null,"source":"GHSA-qcj6-jqrg-4wp2"},{"ecosystem":"Maven","fixed":["3.0.13.RELEASE"],"introduced":["0"],"last_affected":[],"package":"org.thymeleaf:thymeleaf-spring5","purl":"pkg:maven/org.thymeleaf/thymeleaf-spring5","source":"GHSA-qcj6-jqrg-4wp2"}],"prev":{"headline":"Remote code execution in Subrion","id":"CVE-2021-43464"},"products":["n/a"],"published":"2021-11-09","related":[{"cvss_score":9.1,"headline":"Improper restriction of the scope of accessible objects in Thymeleaf expressions","id":"CVE-2026-40477","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":9.1,"headline":"Improper neutralization of specific syntax patterns for unauthorized expressions in Thymeleaf","id":"CVE-2026-40478","kev_date_added":null,"published":"2026-04-17"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can achieve remote code execution via template injection in the Thymeleaf Spring5 library.","url":"https://insights.sbomify.com/CVE-2021-43466/"}