CVE-2026-65650 Denial of service in Elgg
Attackers can cause denial of service by uploading large avatars due to missing dimension checks in Elgg.
- 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-2026-65650?
CVE-2026-65650 is a medium-severity denial of service vulnerability in Elgg, published on 22 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Elgg before 7.0.0 does not check image dimensions to prevent denial of service via a large avatar upload.
Weakness: CWE-770
Which versions are affected by CVE-2026-65650?
How do I fix CVE-2026-65650?
No fix has been published for CVE-2026-65650 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-65650 being exploited?
There is no known exploitation of CVE-2026-65650 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-7983-35fr-8qwm.