{"cve":"CVE-2026-42521","nvd":{"published":"2026-04-29T14:16:19.170","modified":"2026-10-26T20:10:00.160","status":"Analyzed","description":"Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated, allowing attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-502"],"references":["https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3676"],"products":["jenkins:matrix_authorization_strategy"],"source":"nvd","synced_at":"2026-10-26T20:34:58.897451322+00:00"},"epss":{"cve":"CVE-2026-42521","score":0.00246,"percentile":0.15661,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-jp9r-mmhw-vff3","url":"https://osv.dev/vulnerability/GHSA-jp9r-mmhw-vff3","summary":"Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors","modified":"2026-09-10T03:50:44.624913Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:matrix-auth","purl":"pkg:maven/org.jenkins-ci.plugins/matrix-auth","ranges":[">=2.0-beta-1 <3.2.10"],"fixed":["3.2.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}