CVE-2021-21610
Last modified
CVE-2021-21610 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jenkins | Jenkins | <= 2.263.1 |
| Jenkins | Jenkins | <= 2.274 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Related CVEs from 2021
- CVE-2021-21605Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows us…8
- CVE-2021-21606Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperl…4.3
- CVE-2021-21607Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not …6.5
- CVE-2021-21608Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not …5.4
- CVE-2021-21609Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not …5.3
- CVE-2021-2161Vulnerability in the Java SE, Java SE Embedded, Oracle Graal…5.9
- CVE-2021-21611Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not …5.4
- CVE-2021-21612Jenkins TraceTronic ECU-TEST Plugin 2.23.1 and earlier store…5.5
- CVE-2021-21613Jenkins TICS Plugin 2020.3.0.6 and earlier does not escape T…6.1
- CVE-2021-21614Jenkins Bumblebee HP ALM Plugin 4.1.5 and earlier stores cre…5.5
- CVE-2021-21615Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files…5.3
- CVE-2021-21616Jenkins Active Choices Plugin 2.5.2 and earlier does not esc…4.6
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