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CVE-2026-71239

DjangoCRM - Server-Side Template Injection in Mass Mail Message Rendering

8.1 High

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.39%Up 0.2 points since Aug 6, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.1

DjangoCRM - Server-Side Template Injection in Mass Mail Message Rendering

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.

Record
CVE-2026-71239
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-1336
Updated
2026-11-02
EUVDEUVD-2026-53312 8.1

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.

Record
EUVD-2026-53312
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-qwf5-72hq-pg7x 8.1

DjangoCRM's massmail module renders user-controlled EmlMessage fields (subject, content) through...

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.

Record
GHSA-qwf5-72hq-pg7x
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-1336
Updated
2026-11-02
NVD 8.1

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.

Record
CVE-2026-71239
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-1336
Updated
2026-11-02
OSV 8.1

DjangoCRM - Server-Side Template Injection in Mass Mail Message Rendering

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.

Record
CVE-2026-71239
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-1336
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-71239 is a high vulnerability (CVSS 8.1) in Djangocrm Django-crm, published August 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. No source names a fixed version.

References

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