DjangoCRM's massmail module renders user-controlled EmlMessage fields (subject, content) through Django's Template() constructor with no sanitization, in at least three locations: message_previews.py builds an f-string embedding message.subject/message.content directly into a Template() call; email_creators.py passes eml_message.subject directly as a template string to Template(); and helpers.py contains the same f-string interpolation pattern. An authenticated user with mass-mail message edit rights can inject Django template syntax ({{ }} / {% %}) that executes at render time, enabling disclosure of other users' data and password hashes via request context variables, CSRF token forgery, and inclusion of arbitrary registered templates.
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Fixes
Solution
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References
| Link | Providers |
|---|---|
| https://github.com/DjangoCRM/django-crm |
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History
Wed, 05 Aug 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | DjangoCRM's massmail module renders user-controlled EmlMessage fields (subject, content) through Django's Template() constructor with no sanitization, in at least three locations: message_previews.py builds an f-string embedding message.subject/message.content directly into a Template() call; email_creators.py passes eml_message.subject directly as a template string to Template(); and helpers.py contains the same f-string interpolation pattern. An authenticated user with mass-mail message edit rights can inject Django template syntax ({{ }} / {% %}) that executes at render time, enabling disclosure of other users' data and password hashes via request context variables, CSRF token forgery, and inclusion of arbitrary registered templates. | |
| Title | DjangoCRM: Server-Side Template Injection in Mass Mail Message Rendering | |
| Weaknesses | CWE-1336 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: TuranSec
Published:
Updated: 2026-08-05T10:56:36.819Z
Reserved: 2026-08-05T10:53:53.175Z
Link: CVE-2026-71239
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OpenCVE Enrichment
Updated: 2026-08-05T12:30:12Z
Weaknesses