4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-27839

CVE-2026-27839: wger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookup

wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three nutritional_values action endpoints fetch objects via Model.objects.get(pk=pk) — a raw ORM call that bypasses the user-scoped queryset. Any authenticated user can read another user's private nutrition plan data, including caloric intake and full macro breakdown, by supplying an arbitrary PK. Commit 29876a1954fe959e4b58ef070170e81703dab60e contains a fix for the issue.

(GitHub Advisory)

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CVE-2026-27839

CVE-2026-27839:

4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
wger	pip	<= 2.1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability is an Insecure Direct Object Reference (IDOR) in three nutritional_values action endpoints within wger/nutrition/api/views.py. The NutritionPlanViewSet, MealViewSet, and MealItemViewSet all contain a nutritional_values method that fetches an object directly from the database using Model.objects.get(pk=pk). This ORM call does not enforce any ownership checks, meaning any authenticated user can access another user's private nutrition data by simply providing a valid primary key in the URL. The fix would be to use self.get_object(), which is the standard Django Rest Framework way to get an object for a detail view and automatically applies the view's queryset, or to explicitly filter by the current user, for example: NutritionPlan.objects.get(pk=pk, user=self.request.user).

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

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WAF Protection Rules

WAF Rule

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Reasoning

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