CVE-2023-25764
Published: 15 February 2023
Summary
CVE-2023-25764 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Jenkins Email Extension. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 4.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Jenkins Email Extension Plugin 2.93 and earlier contains a stored cross-site scripting vulnerability because the plugin does not escape, sanitize, or sandbox output produced when rendering custom email templates or the associated log messages. The affected component is the template rendering functionality within this widely used Jenkins plugin for extended email notification capabilities.
Attackers who can create or modify custom email templates are able to inject malicious content that is later rendered for other users, resulting in a stored XSS condition with a CVSS 3.1 score of 5.4. Successful exploitation can allow the attacker to execute scripts in the context of another user's Jenkins session, potentially leading to limited impacts on confidentiality and integrity.
The EPSS score for this CVE has remained flat at 0.2059 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-0746
Vulnerability details
Jenkins Email Extension Plugin 2.93 and earlier does not escape, sanitize, or sandbox rendered email template output or log output generated during template rendering, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create or change…
more
custom email templates.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.