CVE-2026-16477
CVE-2026-16477 · Insecure Deserialization of .cleanshot Files in CleanShot X
This page contains facts from public vulnerability sources. Check the original advisory before updating.
CleanShot X for macOS insecurely deserializes untrusted data embedded in a .cleanshot project file (editable screenshot annotations). Exploitation requires an attacker to craft a malicious .cleanshot file, deliver it to the target, and have the target open it; the payload then executes automatically during parsing, resulting in arbitrary code execution in the context of the current user. Users who have never opened a .cleanshot file from an untrusted source are not affected by this vulnerability. This vulnerability was fixed in versions: 4.5.2, 4.6.3, 4.7.8 and 4.8.10
CVSS 8.4 · High · EPSS 0.3% · Fix available
- Published
- Updated
Affected products and versions
cleanshot x
- Versions
- ≥ 4.0.0, < 4.5.2: Affected (semver)
- ≥ 4.6.0, < 4.6.3: Affected (semver)
- ≥ 4.7.0, < 4.7.8: Affected (semver)
- ≥ 4.8.0, < 4.8.10: Affected (semver)
Update to 4.5.2; Update to 4.6.3; Update to 4.7.8; Update to 4.8.10