CVE-2026-16477
Insecure Deserialization of .cleanshot Files in CleanShot X
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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
| CWE | CWE-502 |
| Vendor | mtw |
| Product | cleanshot x |
| Published | Oct 22, 2026 |
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Affected Versions
MTW / CleanShot X
4.0.0 < 4.5.2 4.6.0 < 4.6.3 4.7.0 < 4.7.8 4.8.0 < 4.8.10
References
Credits
Dharan24