CVE-2023-25763 Cross-site Scripting in Jenkins Email Extension Plugin

What is CVE-2023-25763?

CVE-2023-25763 is a medium-severity cross-site scripting vulnerability in Jenkins Email Extension Plugin, published on 15 Feb 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Jenkins Email Extension Plugin 2.93 and earlier does not escape various fields included in bundled email templates, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control affected fields.

Weakness: CWE-79

Which versions are affected by CVE-2023-25763?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:email-ext. It affects 1 product.

Products include Jenkins Email Extension.

How do I fix CVE-2023-25763?

Upgrade org.jenkins-ci.plugins:email-ext to 2.94 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-25763 being exploited?

There is no known exploitation of CVE-2023-25763 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Email Extension Plugin

• CVE-2023-25765 Sandbox escape in Jenkins Email Extension Plugin Critical 9.9
• CVE-2019-1003032 Script security sandbox bypass in Jenkins Email Extension Plugin Critical 9.9
• CVE-2026-48920 Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem High 8.8
• CVE-2020-2232 Jenkins Email Extension Plugin SMTP password transmitted and displayed in plain text High 7.5
• CVE-2018-1000176 Jenkins Email Extension Plugin showed plain text SMTP password in configuration form field Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h97r-fchm-m23x.