3.1

CVE-2026-7666: djangoproject django

CVSS: 3.1v3.1LowAnalyzed
AliasesGHSA-mm6v-q8q9-pgcfBIT-django-2026-7666PYSEC-2026-200
Published 03-06-2026Last modified 03-06-2026
Open JSON

Vulnerability summary

CVE-2026-7666 is a low (CVSS 3.1) vulnerability in djangoproject django. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 9.9% of scored vulnerabilities.

Overall risk
12/100
0100
Low · default modelHow is this calculated?
CVSS score
3.1/10
010
Low · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
MGASA-2026-0324OPENSUSE-SU-2026:10989-1OPENSUSE-SU-2026:11002-1OPENSUSE-SU-2026:11003-1OPENSUSE-SU-2026:11270-1OPENSUSE-SU-2026:20937-1

Timeline

  1. 03-06-2026
    PublishedVulnerability first disclosed.
  2. 03-06-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

9 scores · 6 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.06 pp

From 0.15% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard6 products
  • authentik-2025.12All versions (No fix recorded)
  • authentik-2026.2< 2026.2.5-r9
  • authentik-2026.5< 2026.5.4-r1
  • authentik-fips-2025.12All versions (No fix recorded)
  • authentik-fips-2026.2< 2026.2.6-r1
Debian1 product
  • python-djangoAll versions (No fix recorded) | < 3:5.2.15-1
Djangoproject1 product
  • django≥ 5.2, < 5.2.15 | ≥ 6.0, < 6.0.6
PyPI1 product
  • django≥ 5.2, < 5.2.15 | ≥ 6.0, < 6.0.6
Ubuntu1 product
  • python-djangoAll versions (No fix recorded)

5 vendors · 10 products

References

15 links
Show all 15 references