Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.

Remediation

References

CVE-2021-21610

Related Vulnerabilities

Liferay Portal Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2021-29046)

Oracle Application Server Other Vulnerability (CVE-2007-2130)

WordPress 5.1.x Multiple Vulnerabilities (5.1 - 5.1.6)

PostgreSQL Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability (CVE-2015-3166)

Rukovoditel Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2020-18470)

Severity

Medium

Classification

CVE-2021-21610 CWE-707 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update Known Vulnerabilities