CVE-2026-63228 Unrestricted image upload vulnerability
An authenticated attacker can upload malicious files disguised as images via the feedback mail registration endpoint, potentially leading to server compromise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-63228?
CVE-2026-63228 is a low-severity vulnerability in Three Learning Koollab LMS, published on 29 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An unrestricted image upload vulnerability in Koollab LMS allowed an authenticated attacker to upload malicious content disguised as an image file via the feedback mail registration endpoint, potentially enabling further attacks on the server.
Weakness: CWE-434
Which versions are affected by CVE-2026-63228?
How do I fix CVE-2026-63228?
No fix has been published for CVE-2026-63228 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-63228 being exploited?
There is no known exploitation of CVE-2026-63228 in the wild and no public exploit code.
Sources
Also known as GHSA-7m4m-66m8-f488.