CVE-2026-62294

Flameshot: OCTOU symlink attack via predictable /tmp path in Flameshot "Open With"

MEDIUM
5.1
CVSS Score
Published: July 15, 2026 at 02:20 PM UTC
Updated: October 24, 2026 at 09:10 PM UTC
1 product affected across 1 vendorFlameshot

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Severity
MEDIUM5.1
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 14.0.0
Affected range stops below 14.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.1MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-362CWE-377

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