CVE-2026-16477

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

No CVSS.

References

Link	Resource
https://cert.pl/en/posts/2026/10/CVE-2026-16477
https://cleanshot.com/

Configurations

No configuration.

History

22 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-22 15:17

Updated : 2026-10-22 19:17

NVD link : CVE-2026-16477

Mitre link : CVE-2026-16477

CVE.ORG link : CVE-2026-16477

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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