Medium severity · published Feb 26, 2026
CVE-2026-27839
wger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookup
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WG
wger · wger-project
<= 2.4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27839
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27839
Patch
https://github.com/wger-project/wger/commit/29876a1954fe959e4b58ef070170e81703dab60e
Exploit
https://github.com/wger-project/wger/security/advisories/GHSA-g8gc-6c4h-jg86
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