{"answers":{"affected":"2 open source packages ship an affected version, including org.apache.struts:struts2-core. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-31805 exists.","fix":"Upgrade org.apache.struts:struts2-core to 2.5.30 or later.","what":"CVE-2021-31805 is a critical code injection vulnerability in Apache Struts, published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-31805 and fix it if it is affected.\n\nWhat it is: CVE-2021-31805 is a critical code injection vulnerability in Apache Struts, published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-31805 exists.\n\nAffected packages and fixed versions:\n- org.apache.struts:struts2-core (Maven): affected from 2.0.0; fixed in 2.5.30\n- org.apache.struts:struts2-core (Maven): affected from 2.0.0; fixed in 2.5.30\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-2021-31805/ (Markdown: https://insights.sbomify.com/CVE-2021-31805/index.md)","id":"CVE-2021-31805","markdown":"https://insights.sbomify.com/CVE-2021-31805/index.md","name":"CVE-2021-31805","record":{"aliases":["GHSA-v8j6-6c2r-r27c"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Java web framework","requires_auth":"none","summary":"Attackers can achieve remote code execution by exploiting forced OGNL evaluation on unvalidated user input in specific tag attributes.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"struts","vendor":"apache"}],"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-917","name":"Improper Neutralization of Special Elements used in an Expression Language Statement"}],"description":"The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2022-04-15","github_poc":8,"max_poc_stars":131,"metasploit":0,"nuclei":1,"refs":[{"date":"2022-04-15T01:50:14Z","kind":"github_poc","ref":"https://github.com/pyroxenites/s2-062","stars":131,"title":"远程代码执行S2-062 CVE-2021-31805验证POC"},{"date":"2022-04-15T04:23:44Z","kind":"github_poc","ref":"https://github.com/Wrin9/CVE-2021-31805","stars":37,"title":"S2-062 (CVE-2021-31805) / S2-061 / S2-059 RCE"},{"date":"2022-04-15T11:30:26Z","kind":"github_poc","ref":"https://github.com/jax7sec/S2-062","stars":23,"title":"Apache Struts2 S2-062远程代码执行漏洞(CVE-2021-31805) 支持批量扫描漏洞及漏洞利用"},{"date":"2022-04-15T10:28:29Z","kind":"github_poc","ref":"https://github.com/SecNN/Struts2_S2-062_CVE-2021-31805","stars":11,"title":"Apache Struts2 S2-062远程代码执行漏洞(CVE-2021-31805) | 反弹Shell"},{"date":"2022-04-15T16:09:52Z","kind":"github_poc","ref":"https://github.com/aeyesec/CVE-2021-31805","stars":5,"title":" PoC for CVE-2021-31805 (Apache Struts2)"},{"date":"2022-07-10T14:48:52Z","kind":"github_poc","ref":"https://github.com/z92g/CVE-2021-31805","stars":5,"title":"S2-061/S2-062 Struts2 远程命令执行漏洞 POC\u0026EXP"},{"date":"2022-04-18T06:17:59Z","kind":"github_poc","ref":"https://github.com/JordanANDJohn/CVE-2021-31805-POC","stars":1,"title":"Apache Struts2 S2-062(CVE-2021-31805)远程代码执行批量检测（无利用）"},{"date":"2023-08-04T03:42:37Z","kind":"github_poc","ref":"https://github.com/nth347/struts2-CVE-2021-31805","stars":0,"title":"Vulnerable environment of CVE-2021-31805 (S2-062) for testing"}],"tier":"weaponised"},"has_fix":true,"headline":"Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.","id":"CVE-2021-31805","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"apache:struts","products":["apache:struts"],"type":"code_injection","year":"2021"},"n_packages":2,"n_references":4,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-31806"},"packages":[{"ecosystem":"Maven","fixed":["2.5.30"],"introduced":["2.0.0"],"last_affected":[],"package":"org.apache.struts:struts2-core","purl":null,"source":"GHSA-v8j6-6c2r-r27c"},{"ecosystem":"Maven","fixed":["2.5.30"],"introduced":["2.0.0"],"last_affected":[],"package":"org.apache.struts:struts2-core","purl":"pkg:maven/org.apache.struts/struts2-core","source":"GHSA-v8j6-6c2r-r27c"}],"prev":{"headline":"Use after free in n/a","id":"CVE-2021-31804"},"products":["Apache Struts"],"published":"2022-04-12","related":[{"cvss_score":9.8,"headline":"Apache Struts Remote Code Execution","id":"CVE-2020-17530","kev_date_added":"2021-11-03","published":"2020-12-11"},{"cvss_score":9.8,"headline":"Apache Struts 1 Improper Input Validation","id":"CVE-2017-9791","kev_date_added":"2022-02-10","published":"2017-07-10"},{"cvss_score":9.8,"headline":"Apache Struts Remote Code Execution","id":"CVE-2017-5638","kev_date_added":"2021-11-03","published":"2017-03-11"},{"cvss_score":9.8,"headline":"Apache Struts 2 Improper Input Validation","id":"CVE-2012-0391","kev_date_added":"2022-01-21","published":"2012-01-08"},{"cvss_score":8.1,"headline":"Apache Struts Remote Code Execution","id":"CVE-2018-11776","kev_date_added":"2021-11-03","published":"2018-08-22"},{"cvss_score":8.1,"headline":"Apache Struts Deserialization of Untrusted Data","id":"CVE-2017-9805","kev_date_added":"2021-11-03","published":"2017-09-15"},{"cvss_score":8.1,"headline":"Apache Struts Command Injection","id":"CVE-2016-3081","kev_date_added":"2026-10-08","published":"2016-04-26"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["Apache Software Foundation"]},"summary":"Attackers can achieve remote code execution by exploiting forced OGNL evaluation on unvalidated user input in specific tag attributes.","url":"https://insights.sbomify.com/CVE-2021-31805/"}