{"id":"CVE-2020-2257","aliases":["GHSA-fvwh-wv43-8qj5"],"url":"https://o3.security/vulnerability/CVE-2020-2257","summary":"Stored XSS vulnerability in Validating String Parameter Plugin","details":"Validating String Parameter Plugin 2.4 and earlier does not escape regular expressions in tooltips. Additionally, Validating String Parameter Plugin 2.4 does not escape parameter names and parameter descriptions.\n\nThis results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.\n\nValidating String Parameter Plugin 2.5 escapes regular expressions in tooltips and parameter names. Parameter descriptions are rendered using the configured markup formatter.","published":"2020-09-16T14:15:13.377Z","modified":"2026-07-09T00:37:01.371118Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00735,"percentile":0.52528,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:validating-string-parameter","fixedVersion":"2.5"}],"fix":{"url":"https://github.com/jenkinsci/validating-string-parameter-plugin/commit/345a79d830a5fcd824a3c755506a438c78c48117","label":"jenkinsci/validating-string-parameter-plugin@345a79d"},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/09/16/3"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1935"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2257"},{"type":"WEB","url":"https://github.com/jenkinsci/validating-string-parameter-plugin/commit/345a79d830a5fcd824a3c755506a438c78c48117"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/validating-string-parameter-plugin"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:37:01.371118Z"}}