How the CVE Works:
CVE-2025-25363 is a stored XSS vulnerability in The Plugin People’s Enterprise Mail Handler (JEMH) for Jira Data Center before v4.1.69-dc. Attackers with Administrator privileges can inject malicious JavaScript into the HTML field of a JEMH template. When a victim views or interacts with the compromised template, the script executes in their browser, enabling session hijacking, phishing, or other client-side attacks. The vulnerability stems from insufficient input sanitization in template HTML fields.
DailyCVE Form:
Platform: Jira Data Center
Version: <4.1.69-dc
Vulnerability: Stored XSS
Severity: Medium
Date: 04/03/2025
What Undercode Say:
Exploitation:
1. Payload Injection:
<script>alert(document.cookie)</script>
Admins inject this into JEMH template HTML fields.
2. Trigger Execution:
Victims load the template, executing the payload.
Protection:
1. Patch: Upgrade to JEMH ≥4.1.69-dc.
2. Input Sanitization:
String sanitized = Jsoup.clean(rawInput, Whitelist.basic());
3. CSP Header:
add_header Content-Security-Policy "default-src 'self'; script-src 'unsafe-inline'";
Detection:
1. Audit Logs:
SELECT FROM jira_audit WHERE action LIKE '%template%edit%';
2. Regex Scan:
grep -r "<script>" /var/atlassian/jira/jemh/templates/
Mitigation:
1. Temporary Workaround:
<jira-config> <disable-html-templates>true</disable-html-templates> </jira-config>
2. WAF Rules: Block HTML/JS in template POST requests.
Impact Analysis:
- CVSS: 6.5 (Medium)
- Exploitability: Low (requires admin privs).
- Affected Components: JEMH template rendering engine.
References:
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-25363
Extra Source Hub:
Undercode
