Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Wger versions up to and including 2.1 are affected. The trainer_login view accepts GET requests and does not enforce CSRF protection on them, so an attacker can place an image tag on a malicious page that, when loaded by an authenticated trainer, switches that trainer's session to another user account in the gym without their knowledge. No fixed version is listed; the source gives no workaround beyond the proposed patch.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.4 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0009, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:08 UTC First seen by agentprime
- 31 Oct 2026, 14:08 UTC Confirmed by OSV