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CVE-2013-5573 — jenkins-core

CVE-2013-5573 is a Cross-site Scripting (XSS) vulnerability in org.jenkins-ci.main:jenkins-core. 4 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Jenkins allows Cross-Site Scripting (XSS) in User Configuration

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
4 known
Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
5.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs93th percentile — riskier than 93% of all scored CVEsHighest risk
0.49%2.51%4.52%6.54%1.6%5.4%May 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.main:jenkins-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Cross-site scripting (XSS) vulnerability in the default markup formatter in Jenkins 1.523 allows remote attackers to inject arbitrary web script or HTML via the Description field in the user configuration.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.main:jenkins-coreall versionsNo fix

Affected Products

1 product · 1 configurations
Application
jenkinsjenkins
1 version
1.523
Exploits & PoCs
4

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-30408webappsphp

Jenkins 1.523 - Persistent HTML Code

by Christian Catalano · Dec 18, 2013

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.main:jenkins-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of org.jenkins-ci.main:jenkins-core for CVE-2013-5573. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate
Workaround published by Red Hat
'MyspacePolicy' permits tag("form", "action", ONSITE_OR_OFFSITE_URL, "method"); Fix 'MyspacePolicy' by restricting the policy to ONSITE_URL only or perhaps <form> could be banned entirely.
Source: Red Hat security advisory for CVE-2013-5573 (CC BY 4.0)
ProductFixed inAdvisory
Red Hat OpenShift Enterprise 2.1jenkins-0:1.565.3-1.el6opRHBA-2014:1630

Frequently Asked Questions

Cross-site scripting (XSS) vulnerability in the default markup formatter in Jenkins 1.523 allows remote attackers to inject arbitrary web script or HTML via the Description field in the user configuration.
O3 Security · Impact-Aware SCA

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CVE-2013-5573: jenkins-core XSS