CVE-2026-62294 Flameshot: OCTOU symlink attack via predictable /tmp path in Flameshot "Open With"
A local attacker can exploit a race condition in the Open With feature to overwrite arbitrary files via symlink attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-62294?
CVE-2026-62294 is a medium-severity vulnerability in flameshot-org flameshot, published on 15 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Flameshot is powerful yet simple to use screenshot software. Prior to 14.0.0, the Open With feature wrote screenshots to a predictable temporary path and followed symlinks, creating a time-of-check to time-of-use race that allowed a local unprivileged attacker on the same machine to pre-plant a symlink and cause Flameshot to write PNG data through it, overwriting any file the victim user could write. This issue is fixed in version 14.0.0.
Which versions are affected by CVE-2026-62294?
How do I fix CVE-2026-62294?
Upgrade to a fixed version.
Is CVE-2026-62294 being exploited?
There is no known exploitation of CVE-2026-62294 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-62294, GHSA-fqqf-4rj8-c392, UBUNTU-CVE-2026-62294.