CVE-2026-48053 Kolibri has Unauthenticated Server-Side Request Forgery (SSRF) in RemoteFacilityUserViewset
Unauthenticated attackers can exploit SSRF in Kolibri to fetch arbitrary URLs and read response data via vulnerable API endpoints.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48053?
CVE-2026-48053 is a medium-severity server-side request forgery vulnerability in learningequality kolibri, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Kolibri is an offline-first education platform. Prior to version 0.19.4, several Kolibri API endpoints accept an unvalidated `baseurl` parameter and fetch attacker-controlled URLs from the Kolibri server, reflecting the response body back to the caller. The original report identified two endpoints on the `RemoteFacilityUser*` viewsets; remediation review found two further reflection points on the same pattern. The GET endpoint was unauthenticated. Version 0.19.4 fixes the vulnerability.
Weakness: CWE-918
Which versions are affected by CVE-2026-48053?
3 open source packages ship an affected version, including kolibri.
| Package | Affected | Fixed in |
|---|---|---|
kolibri PyPI | All versions | 0.19.4 |
kolibri PyPI | All versions | 0.19.4 |
kolibri PyPI | All versions | 0.19.4 |
How do I fix CVE-2026-48053?
Upgrade kolibri to 0.19.4 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-48053 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48053 exists.
Sources
Also known as GHSA-4mj9-pf4r-cqrc, PYSEC-2026-2554.