{"answers":{"affected":"2 open source packages ship an affected version, including org.springframework:spring-web. It affects 1 product.","exploited":"There is no known exploitation of CVE-2016-1000027 in the wild and no public exploit code.","fix":"Upgrade org.springframework:spring-web to 6.0.0 or later.","what":"CVE-2016-1000027 is a critical unsafe deserialization vulnerability in Vmware Spring Framework, published on 2 Jan 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-2016-1000027 and fix it if it is affected.\n\nWhat it is: CVE-2016-1000027 is a critical unsafe deserialization vulnerability in Vmware Spring Framework, published on 2 Jan 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-2016-1000027 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.springframework:spring-web (Maven): affected all versions; fixed in 6.0.0\n- org.springframework:spring-web (Maven): affected all versions; fixed in 6.0.0\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-2016-1000027/ (Markdown: https://insights.sbomify.com/CVE-2016-1000027/index.md)","id":"CVE-2016-1000027","markdown":"https://insights.sbomify.com/CVE-2016-1000027/index.md","name":"CVE-2016-1000027","record":{"aliases":["CLEANSTART-2026-DY91786","DEBIAN-CVE-2016-1000027","GHSA-4wrc-f8pq-fpqp","MINI-564f-9jhg-rjwp","MINI-c7cw-gj96-v8hr","MINI-vccc-gfwj-g2mj","RHLW-2026-a06fd4cfdab7ef70","ROOT-APP-MAVEN-CVE-2016-1000027"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Java web framework","requires_auth":"none","summary":"Remote code execution is possible in Spring Framework if developers configure it to deserialize untrusted data, a scenario the vendor deems out of scope.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"spring_framework","vendor":"vmware"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","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":"Pivotal Spring Framework through 5.3.16 suffers from a potential remote code execution (RCE) issue if used for Java deserialization of untrusted data. Depending on how the library is implemented within a product, this issue may or not occur, and authentication may be required. NOTE: the vendor's position is that untrusted data is not an intended use case. The product's behavior will not be changed because some users rely on deserialization of trusted data.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2021-02-01","github_poc":4,"max_poc_stars":12,"metasploit":0,"nuclei":0,"refs":[{"date":"2021-02-01T19:46:51Z","kind":"github_poc","ref":"https://github.com/artem-smotrakov/cve-2016-1000027-poc","stars":12,"title":"PoC for CVE-2016-1000027"},{"date":"2023-11-20T02:02:10Z","kind":"github_poc","ref":"https://github.com/tina94happy/Spring-Web-5xx-Mitigated-version","stars":2,"title":"Mitigated version for CVE-2016-1000027 spring web."},{"date":"2024-02-08T15:57:41Z","kind":"github_poc","ref":"https://github.com/yihtserns/spring-web-without-remoting","stars":0,"title":"Spring Web 5.x with `org.springframework.remoting` package removed, to fix CVE-2016-1000027."},{"date":"2026-02-13T15:41:33Z","kind":"github_poc","ref":"https://github.com/Ragatzino/test-cve-2016-1000027","stars":0,"title":"validation de l'exploitabilité d'une CVE"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Pivotal Spring Framework contains unsafe Java deserialization methods","id":"CVE-2016-1000027","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"vmware:spring_framework","products":["vmware:spring_framework"],"type":"deserialization","year":"2016"},"n_packages":2,"n_references":9,"next":{"headline":"Tenable Nessus before 6.8 has a stored XSS issue that requires admin-level authentication to the Nessus UI, and would only potentially impact other admins.","id":"CVE-2016-1000028"},"packages":[{"ecosystem":"Maven","fixed":["6.0.0"],"introduced":["0"],"last_affected":[],"package":"org.springframework:spring-web","purl":null,"source":"GHSA-4wrc-f8pq-fpqp"},{"ecosystem":"Maven","fixed":["6.0.0"],"introduced":["0"],"last_affected":[],"package":"org.springframework:spring-web","purl":"pkg:maven/org.springframework/spring-web","source":"GHSA-4wrc-f8pq-fpqp"}],"prev":{"headline":"Other in n/a","id":"CVE-2016-1000009"},"products":["n/a"],"published":"2020-01-02","related":[{"cvss_score":9.8,"headline":"Spring Framework Improper Path Limitation in XsltView","id":"CVE-2026-47884","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.8,"headline":"Spring Framework Server Sent Event stream corruption while rendering fragments","id":"CVE-2026-47890","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.8,"headline":"Spring Framework maxInMemorySize Bypassed in Jaxb2Decoder","id":"CVE-2026-47891","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.8,"headline":"Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints","id":"CVE-2026-47892","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.8,"headline":"Server Sent Event stream corruption in Spring MVC functional web framework","id":"CVE-2026-59313","kev_date_added":null,"published":"2026-08-27"},{"cvss_score":9.1,"headline":"Spring Framework Safety Guard Bypass via SpEL Expression Compilation","id":"CVE-2026-59283","kev_date_added":null,"published":"2026-08-27"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["n/a"]},"summary":"Remote code execution is possible in Spring Framework if developers configure it to deserialize untrusted data, a scenario the vendor deems out of scope.","url":"https://insights.sbomify.com/CVE-2016-1000027/"}