CVE-2026-108652 JeecgBoot through 3.9.5 Missing Authorization via /sys/api/updateAvatar
Authenticated users can modify other users' avatars, including administrators, due to missing authorization checks in the updateAvatar API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108652?
CVE-2026-108652 is a medium-severity missing authorization vulnerability in JeecgBoot, published on 10 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the SystemApiController updateAvatar handler that allows any authenticated user to change other users' avatars. Low-privileged attackers can send PUT requests with a target user id and an arbitrary value, such as an attacker-controlled image URL, to replace administrators' avatars.
Weakness: CWE-862
Which versions are affected by CVE-2026-108652?
How do I fix CVE-2026-108652?
No fix has been published for CVE-2026-108652 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-108652 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108652 exists.
Sources
Also known as GHSA-w99x-m7g5-9xgv.