Vulnerability Description
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
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-16477?
CVE-2026-16477 is a documented vulnerability. 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 ...
How severe is CVE-2026-16477?
CVSS scoring is not yet available for CVE-2026-16477. Check NVD for updates.
Is there a patch for CVE-2026-16477?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.