{"id":"CVE-2020-2207","aliases":["GHSA-2j4h-cjgh-659v"],"url":"https://o3.security/vulnerability/CVE-2020-2207","summary":"Reflected XSS vulnerability in Jenkins VncViewer Plugin","details":"VncViewer Plugin 1.7 and earlier does not escape a parameter value in the `checkVncServ` form validation endpoint output.\n\nThis results in a reflected cross-site scripting (XSS) vulnerability.\n\nVncViewer Plugin 1.8 escapes the parameter value in the output.","published":"2020-07-02T15:15:17.677Z","modified":"2026-07-08T23:58:14.086819Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:vncviewer","fixedVersion":"1.8"}],"fix":{"url":"https://github.com/jenkinsci/vncviewer-plugin/commit/99b2aa3ed0857ef35de9a3aca0b0c53add3b392d","label":"jenkinsci/vncviewer-plugin@99b2aa3"},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/07/02/7"},{"type":"ADVISORY","url":"https://jenkins.io/security/advisory/2020-07-02/#SECURITY-1776"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2207"},{"type":"WEB","url":"https://github.com/jenkinsci/vncviewer-plugin/commit/99b2aa3ed0857ef35de9a3aca0b0c53add3b392d"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/vncviewer-plugin"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T23:58:14.086819Z"}}