XSS in Django-Helpdesk
CVE-2026-73531
django-helpdesk before 2.3.3 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject arbitrary JavaScript by submitting HTML-formatted email messages or uploading .html/.htm file attachments through public ticket submission channels. Attackers can exploit the lack of sanitization and Content-Disposition headers at the attachment-serving layer to execute malicious scripts in the browser session of authenticated staff members who open the attachment while triaging tickets.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Django-Helpdesk — versions 0
Weakness classification (CWE)
References
- github.com/django-helpdesk/django-helpdesk/security/advisories/GHSA-q46c-8w98-f… (vendor-advisory)
- www.vulncheck.com/advisories/django-helpdesk-stored-xss-via-html-attachments (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73531?
- CVE-2026-73531 is a medium-severity vulnerability in Django-Helpdesk, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-13.
- How severe is CVE-2026-73531?
- Medium severity. CVSS v3 base score is 6.1 out of 10.