{"answers":{"affected":"2 open source packages ship an affected version, including org.apache.tapestry:tapestry-project. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-17531 in the wild and no public exploit code.","fix":"Upgrade org.apache.tapestry:tapestry-project to 5.0.1 or later.","what":"CVE-2020-17531 is a critical unsafe deserialization vulnerability in Apache Tapestry, published on 8 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-17531 and fix it if it is affected.\n\nWhat it is: CVE-2020-17531 is a critical unsafe deserialization vulnerability in Apache Tapestry, published on 8 Dec 2020. 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-2020-17531 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tapestry:tapestry-project (Maven): affected from 4.0; fixed in 5.0.1\n- org.apache.tapestry:tapestry-project (Maven): affected from 4.0; fixed in 5.0.1\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-2020-17531/ (Markdown: https://insights.sbomify.com/CVE-2020-17531/index.md)","id":"CVE-2020-17531","markdown":"https://insights.sbomify.com/CVE-2020-17531/index.md","name":"CVE-2020-17531","record":{"aliases":["GHSA-c566-2grg-mjwg"],"analysis":{"component_type":"web_application","fix_type":"end_of_life","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java web framework","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code via unsafe deserialization in the end-of-life Apache Tapestry 4 framework.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tapestry","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-502","name":"Deserialization of Untrusted Data"}],"description":"A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the \"sp\" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2020-12-09","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2020-12-09T08:01:10Z","kind":"github_poc","ref":"https://github.com/154802388/CVE-2020-17531","stars":0,"title":"Apache Struts2框架是一个用于开发Java EE网络应用程序的Web框架。Apache Struts于2020年12月08日披露 S2-061 Struts 远程代码执行漏洞（CVE-2020-17530），在使用某些tag等情况下可能存在OGNL表达式注入漏洞，从而造成远程代码执行，风险极大。提醒我校Apache Struts用户尽快采取安全措施阻止漏洞攻击。"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Deserialization flaw in EOL Tapestry 4.","id":"CVE-2020-17531","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"deserialization","year":"2020"},"n_packages":2,"n_references":4,"next":{"headline":"Apache ServiceComb Yaml remote deserialization vulnerability","id":"CVE-2020-17532"},"packages":[{"ecosystem":"Maven","fixed":["5.0.1"],"introduced":["4.0"],"last_affected":[],"package":"org.apache.tapestry:tapestry-project","purl":null,"source":"GHSA-c566-2grg-mjwg"},{"ecosystem":"Maven","fixed":["5.0.1"],"introduced":["4.0"],"last_affected":[],"package":"org.apache.tapestry:tapestry-project","purl":"pkg:maven/org.apache.tapestry/tapestry-project","source":"GHSA-c566-2grg-mjwg"}],"prev":{"headline":"Apache Struts Remote Code Execution","id":"CVE-2020-17530"},"products":["Apache Tapestry"],"published":"2020-12-08","related":[{"cvss_score":9.8,"headline":"Apache Tapestry prior to version 4 (EOL) allows RCE though deserialization of untrusted input","id":"CVE-2022-46366","kev_date_added":null,"published":"2022-12-02"},{"cvss_score":9.8,"headline":"Bypass of the fix for CVE-2019-0195","id":"CVE-2021-27850","kev_date_added":null,"published":"2021-04-15"},{"cvss_score":9.8,"headline":"Deserialization of Untrusted Data in Apache Tapestry","id":"CVE-2019-0195","kev_date_added":null,"published":"2019-09-16"},{"cvss_score":9.8,"headline":"Timing attack on HMAC signature comparison in Apache Tapestry","id":"CVE-2019-10071","kev_date_added":null,"published":"2019-09-16"},{"cvss_score":7.8,"headline":"Apache Tapestry Unsafe Object Storage","id":"CVE-2014-1972","kev_date_added":null,"published":"2015-08-22"},{"cvss_score":7.5,"headline":"Apache Tapestry: Possible classpath file download through URL manipulation","id":"CVE-2026-61899","kev_date_added":null,"published":"2026-08-10"}],"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":"2024-08-04","vendors":["Apache Software Foundation"]},"summary":"Unauthenticated attackers can execute arbitrary code via unsafe deserialization in the end-of-life Apache Tapestry 4 framework.","url":"https://insights.sbomify.com/CVE-2020-17531/"}