CVE-2026-4277: djangoproject django Missing Authorization
Vulnerability summary
CVE-2026-4277 is a critical (CVSS 9.8) Missing Authorization vulnerability in djangoproject django. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 8Timeline
- 07-04-2026PublishedVulnerability first disclosed.
- 23-06-2026Last modifiedVulnerability information updated.
Description
An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. Add permissions on inline model instances were not validated on submission of forged `POST` data in `GenericInlineModelAdmin`. 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 N05ec@LZU-DSLab for reporting this issue.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · PypiEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.60%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
+0.14 pp
From 0.46% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard6 products
- authentik-2025.12< 2025.12.4-r3
- authentik-2026.2< 2026.2.1-r3
- authentik-fips-2025.12< 2025.12.4-r3
- authentik-fips-2026.2< 2026.2.1-r3
- awx< 24.6.1-r34
Debian1 product
- python-djangoAll versions (No fix recorded) | < 3:4.2.30-1
Djangoproject1 product
- django≥ 4.2, < 4.2.30 | ≥ 5.2, < 5.2.13 | ≥ 6.0, < 6.0.4
PyPI1 product
- django≥ 5.2, < 5.2.13 | ≥ 4.2, < 4.2.30 | ≥ 6.0, < 6.0.4
Ubuntu1 product
- python-djangoAll versions (No fix recorded) | < 1.8.7-1ubuntu5.15+esm12 | < 1:1.11.11-1ubuntu1.21+esm15 | < 2:2.2.12-1ubuntu0.29+esm8 | < 2:3.2.12-2ubuntu1.26 | < 3:4.2.11-1ubuntu1.15 | < 3:5.2.4-1ubuntu2.4
5 vendors · 10 products
References
17 links- github.com/django/djangoPACKAGE
Show all 17 references
- pypi.org/project/Django/PACKAGE