Answer in brief
CVE-2026-7666 records a Low severity (CVSS 3.1) vulnerability in Django fails to prevent reuse of a partially-initialized connection after a failed `STARTTLS` handshake. The current sources do not mark it as known exploited. The current feed maps django (pip), django (pip), django (pypi), django (pypi) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps django (pip), django (pip), django (pypi), django (pypi) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| djangopip | >=5.2,<5.2.15 | 5.2.15 |
| djangopip | >=6.0,<6.0.6 | 6.0.6 |
| djangopypi | >=5.2 <5.2.15 >=6.0 <6.0.6 | 5.2.15, 6.0.6 |
| djangopypi | >=5.2 <5.2.15 | 5.2.15 |
| djangopypi | >=6.0 <6.0.6 | 6.0.6 |
Published upstream
Jun 3, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Jul 13, 2026
An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.core.mail.backends.smtp.EmailBackend` in Django fails to prevent reuse of a partially-initialized connection after a failed `STARTTLS` handshake when `fail_silently=True`, which allows on-path network attackers to read email content via cleartext interception. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Kasper Dupont for reporting this issue.
Quoted source text, attributed separately from HOL analysis.