{"id":"CVE-2016-1000027","aliases":["DEBIAN-CVE-2016-1000027","EUVD-2022-2463","GHSA-2rmj-mq67-h97g","GHSA-2wrp-6fg6-hmc5","GHSA-4gc7-5j7h-4qph","GHSA-4wrc-f8pq-fpqp","GHSA-hgjh-9rj2-g67j","RHLW-2026-a06fd4cfdab7ef70","RHLW-2026-a9afa2d7b2973961"],"status":"published","title":"Pivotal Spring Framework contains unsafe Java deserialization methods","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.33179,"percentile":0.98378,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-502"],"published":"2020-01-02T00:00:00Z","modified":"2026-10-27T04:13:02Z","exploits":[{"source":"pocgithub","id":"artem-smotrakov/cve-2016-1000027-poc","title":"artem-smotrakov/cve-2016-1000027-poc","date":"2021-02-01","url":"https://github.com/artem-smotrakov/cve-2016-1000027-poc"},{"source":"pocgithub","id":"tina94happy/Spring-Web-5xx-Mitigated-version","title":"tina94happy/Spring-Web-5xx-Mitigated-version","date":"2023-11-20","url":"https://github.com/tina94happy/Spring-Web-5xx-Mitigated-version"},{"source":"pocgithub","id":"yihtserns/spring-web-without-remoting","title":"yihtserns/spring-web-without-remoting","date":"2024-02-08","url":"https://github.com/yihtserns/spring-web-without-remoting"},{"source":"pocgithub","id":"Ragatzino/test-cve-2016-1000027","title":"Ragatzino/test-cve-2016-1000027","date":"2026-02-13","url":"https://github.com/Ragatzino/test-cve-2016-1000027"}],"fixes":[{"ecosystem":"Maven","package":"org.springframework:spring-web","fixed_in":["6.0.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"libspring-java","fixed_in":["4.2.7-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libspring-java","fixed_in":["4.2.7-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libspring-java","fixed_in":["4.2.7-1"],"sources":["osv"]},{"ecosystem":"Red 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Party Advisory","evidence","web"]},{"url":"https://raw.githubusercontent.com/distributedweaknessfiling/cvelist/master/2016/1000xxx/CVE-2016-1000027.json","tags":["x_transferred","Broken Link","Exploit","Third Party Advisory","evidence"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-1000027","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000027","tags":["x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-579669626","tags":["x_transferred","Issue Tracking","Third Party Advisory","report","web"]},{"url":"https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-582313417","tags":["x_transferred","Issue Tracking","Third Party 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Advisory","report","web"]},{"url":"https://security.netapp.com/advisory/ntap-20230420-0009/","tags":["x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-1000027","tags":["advisory"]},{"url":"https://github.com/spring-projects/spring-framework/issues/24434","tags":["web"]},{"url":"https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-1231625331","tags":["web"]},{"url":"https://github.com/spring-projects/spring-framework/commit/5cbe90b2cd91b866a5a9586e460f311860e11cfa","tags":["web"]},{"url":"https://support.contrastsecurity.com/hc/en-us/articles/4402400830612-Spring-web-Java-Deserialization-CVE-2016-1000027","tags":["web"]},{"url":"https://github.com/spring-projects/spring-framework/issues/21680","tags":["web"]},{"url":"https://github.com/spring-projects/spring-framework/commit/2b051b8b321768a4cfef83077db65c6328ffd60f","tags":["web"]},{"url":"https://jira.spring.io/browse/SPR-17143?redirect=false","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4wrc-f8pq-fpqp","tags":["advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20230420-0009","tags":["web"]},{"url":"https://github.com/spring-projects/spring-framework","tags":["package"]},{"url":"https://spring.io/security/cve-2024-22259","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/22xxx/CVE-2024-22259.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-22259","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hgjh-9rj2-g67j","tags":["advisory"]},{"url":"https://spring.io/security/cve-2024-22262","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-22262","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2wrp-6fg6-hmc5","tags":["advisory"]},{"url":"https://spring.io/security/cve-2024-38809","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38809","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2rmj-mq67-h97g","tags":["advisory"]},{"url":"https://spring.io/security/cve-2024-38820","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38820.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38820","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4gc7-5j7h-4qph","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2016-1000027","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.","status":"published","published":"2020-01-02T00:00:00Z","modified":"2026-10-07T18:43:12.985Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:36.802481Z"}],"euvd":[{"id":"EUVD-2022-2463","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.","status":"published","published":"2020-01-02T00:00:00Z","modified":"2026-10-07T18:43:12Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T17:27:34.353796Z"}],"ghsa":[{"id":"GHSA-4wrc-f8pq-fpqp","title":"Pivotal Spring Framework contains unsafe Java deserialization methods","description":"Pivotal Spring Framework before 6.0.0 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.\n\nMaintainers recommend investigating alternative components or a potential mitigating control. Version 4.2.6 and 3.2.17 contain [enhanced documentation](https://github.com/spring-projects/spring-framework/commit/5cbe90b2cd91b866a5a9586e460f311860e11cfa) advising users to take precautions against unsafe Java deserialization, version 5.3.0 [deprecate the impacted classes](https://github.com/spring-projects/spring-framework/issues/25379) and version 6.0.0 [removed it entirely](https://github.com/spring-projects/spring-framework/issues/27422).","status":"published","published":"2022-05-24T17:05:30Z","modified":"2023-06-01T19:56:27Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:36:53.103029Z"}],"nvd":[{"id":"CVE-2016-1000027","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.","status":"published","published":"2020-01-02T23:15:11.857Z","modified":"2026-10-07T19:17:10.483Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:03:40.524348Z"}],"osv":[{"id":"CVE-2016-1000027","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.","status":"published","published":"2020-01-02T23:15:11.857Z","modified":"2026-10-20T10:46:45.824390776Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:01.531338Z"},{"id":"DEBIAN-CVE-2016-1000027","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.","status":"published","published":"2020-01-02T23:15:11.857Z","modified":"2026-10-08T09:47:36.139556967Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:27.323751Z"},{"id":"GHSA-4wrc-f8pq-fpqp","title":"Pivotal Spring Framework contains unsafe Java deserialization methods","description":"Pivotal Spring Framework before 6.0.0 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.\n\nMaintainers recommend investigating alternative components or a potential mitigating control. Version 4.2.6 and 3.2.17 contain [enhanced documentation](https://github.com/spring-projects/spring-framework/commit/5cbe90b2cd91b866a5a9586e460f311860e11cfa) advising users to take precautions against unsafe Java deserialization, version 5.3.0 [deprecate the impacted classes](https://github.com/spring-projects/spring-framework/issues/25379) and version 6.0.0 [removed it entirely](https://github.com/spring-projects/spring-framework/issues/27422).","status":"published","published":"2022-05-24T17:05:30Z","modified":"2026-09-10T03:49:19.715346399Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:37.528068Z"},{"id":"RHLW-2026-a06fd4cfdab7ef70","title":"Lightwell Security Advisory: spring-aop 5.3.18.rhlw-00010","description":"Red Hat Lightwell has released org.springframework:spring-aop 5.3.18.rhlw-00010 with a backported security fix.\n\nCVE-2016-1000027: 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.\n\nThis patched artifact is a drop-in replacement for org.springframework:spring-aop 5.3.18 from Maven Central.","status":"published","published":"2026-10-08T19:46:24Z","modified":"2026-10-27T04:00:12.747684409Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:58.636919Z"},{"id":"RHLW-2026-a9afa2d7b2973961","title":"Lightwell Security Advisory: spring-web 5.3.18.rhlw-00010","description":"Red Hat Lightwell has released org.springframework:spring-web 5.3.18.rhlw-00010 with backported fixes for CVE-2016-1000027, CVE-2024-22259, CVE-2024-22262, CVE-2024-38809, and CVE-2024-38820.\n\nCVE-2016-1000027: 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.\n\nCVE-2024-22259: CVE-2024-22259: Spring Framework URL Parsing with Host Validation (2nd report)\n\nCVE-2024-22262: Applications that use UriComponentsBuilder to parse an externally provided URL (e.g. through a query parameter) AND perform validation checks on the host of the parsed URL may be vulnerable to a  open redirect https://cwe.mitre.org/data/definitions/601.html  attack or to a SSRF attack if the URL is used after passing validation checks.\n\nThis is the same as  CVE-2024-22259 https://spring.io/security/cve-2024-22259  and  CVE-2024-22243 https://spring.io/security/cve-2024-22243 , but with different input.\n\nCVE-2024-38809: Applications that parse ETags from \"If-Match\" or \"If-None-Match\" request headers are vulnerable to DoS attack.\n\nUsers of affected versions should upgrade to the corresponding fixed version.\n\nUsers of older, unsupported versions could enforce a size limit on \"If-Match\" and \"If-None-Match\" headers, e.g. through a Filter.\n\nCVE-2024-38820: CVE-2024-38820: Spring Framework DataBinder Case Sensitive Match Exception\n\nThis patched artifact is a drop-in replacement for org.springframework:spring-web 5.3.18 from Maven Central.","status":"published","published":"2026-10-12T15:37:41Z","modified":"2026-10-27T04:13:02.695456445Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:58.636919Z"}]}}