EUVD-2026-56888Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Network-reachable via POST; PR:L because authenticated write access is required; confidentiality only, as no data is modified or service disrupted.
Primary rating from Vendor (github).
CVSS VectorVendor: github
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Django REST framework is a powerful and flexible toolkit for building Web APIs. Prior to 3.17.2, Django REST Framework's rest_framework/renderers.py AdminRenderer.render() uses override_method() to simulate GET and directly invokes view.get() without view.check_permissions() while rendering an invalid write request, allowing a 400 Bad Request HTML response to disclose data from a GET representation that the requester is not permitted to access. This issue is fixed in version 3.17.2.
AnalysisAI
AdminRenderer in Django REST Framework prior to 3.17.2 discloses unauthorized GET resource data to authenticated users who hold write-but-not-read permissions on a DRF view. When a POST request fails validation and returns a 400 Bad Request, the renderer internally calls view.get() without first invoking view.check_permissions(), embedding the full GET representation in the HTML error response visible to the requester. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Three concurrent conditions must hold for exploitation: (1) the DRF view must use AdminRenderer in its renderer_classes, which is active by default in development settings but must be explicitly retained in production; (2) the view must configure asymmetric permissions where the requesting user is permitted to call POST but denied GET on the same view (e.g., via a permission class like PostOnlyPermission as demonstrated in the patched test suite); and (3) the attacker must be authenticated with at least low-privilege credentials sufficient to submit POST requests (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 Medium score with vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N accurately represents the bounded nature of this flaw: confidentiality impact only, no integrity or availability concern, and PR:L reflecting the mandatory authenticated write-access prerequisite. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a low-privilege account that holds POST but not GET access to a DRF endpoint backed by AdminRenderer deliberately submits a POST request with a payload that fails serializer validation, triggering a 400 Bad Request. The AdminRenderer renders the HTML error page by internally calling view.get() without re-checking permissions, and the attacker receives the full GET resource representation - including data they are explicitly denied read access to - embedded in the 400 response body. … |
| Remediation | Upgrade django-rest-framework to version 3.17.2, the vendor-released patch that resolves this issue (https://github.com/encode/django-rest-framework/releases/tag/3.17.2). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: ModerateShare
External POC / Exploit Code
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