CVE-2026-46438

wger is a free, open-source workout and fitness manager. Prior to version 2.6, an authenticated attacker can inject arbitrary workout log entries into any other user's `SlotEntry` by supplying the victim's `slot_entry` ID in a `POST /api/v2/workoutlog/` request. The `slot_entry` foreign key is not included in the ownership verification performed by `WorkoutLogViewSet.get_owner_objects()`, so the server accepts and persists the cross-user reference without error. Because `SlotEntry.get_config_data()` retrieves associated logs via `self.workoutlog_set.all()` with no user filter, the attacker's injected data is silently folded into the victim's progressive-overload calculations, corrupting their auto-generated weight and repetition targets. Version 2.6 contains a patch.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-25)

CWEs

CWE-639, CWE-862

Published

2026-10-07

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Packages (OSV)

References

• https://github.com/wger-project/wger/releases/tag/2.6
• https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x
• https://github.com/wger-project/wger/security/advisories/GHSA-rjpf-7pf5-q54x

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