CVE-2026-42310
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
Pillow (Python imaging library) from version 4.2.0 to before version 12.2.0 contains a vulnerability where an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive.
Risk Assessment
An attacker can cause a denial of service (DoS) to applications using Pillow, preventing image processing and affecting service availability.
Recommendation
Update Pillow to version 12.2.0 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.