CVE-2026-4277 | Privilege abuse in GenericInlineModelAdmin

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.

Published: 2026-04-07 Last update: 2026-04-13 Assigner: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92

Conclusion & alert: CVE-2026-4277 is rated Moderate Risk (41.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.02%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-4277

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 0.05% 0.02% -0.03%
2 2026-04-13 0.01% 0.05% +0.04%
3 2026-04-08 0.01%

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-4277

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-4277

GitHub Security Advisory for CVE-2026-4277

GHSA-pwjp-ccjc-ghwg · Severity: low · Ecosystem: pip — Django vulnerable to privilege abuse in GenericInlineModelAdmin

OS Trackers for CVE-2026-4277

vendor priority summary link
alpine CVE-2026-4277: 1 source package rows (py3-django); 2 state rows across 2 repos (3.23-community, edge-community); fixed 2, open 0. https://security.alpinelinux.org/vuln/CVE-2026-4277
debian not yet assigned CVE-2026-4277 not yet assigned priority: Debian including 1 source packages (python-django), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-4277
redhat medium https://access.redhat.com/security/cve/CVE-2026-4277
suse medium CVE-2026-4277 severity moderate: SUSE including 5 source package names (python311-Django4-4.2.30-1.1, python313-Django4-4.2.30-1.1, python313-Django6-6.0.4-1.1, python314-Django4-4.2.30-1.1, python314-Django6-6.0.4-1.1), 5 product×package rows across 1 product lines (openSUSE Tumbleweed): Fixed 5. https://www.suse.com/security/cve/CVE-2026-4277/
ubuntu low CVE-2026-4277 low priority: Ubuntu including 1 source packages (python-django), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): released 7, ignored 1. https://ubuntu.com/security/CVE-2026-4277

Affected software / configurations for CVE-2026-4277

Vendor Product Version Raw CPE
djangoproject django >= 4.2, < 4.2.30 cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
djangoproject django >= 5.2, < 5.2.13 cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
djangoproject django >= 6.0, < 6.0.4 cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*

References for CVE-2026-4277

cvelogic Threat Intelligence