AUGUST 25, 2026
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Case File

CVE-2026-55380

HIGH · CVSS 7.5 EPSS 0.42% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-06 · Last synced 2026-08-05

CyberRota Analysis

AI-Generated

The Pillow Python imaging library prior to version 12.3.0 is vulnerable due to improper handling of image dimensions in GD 2.x files, potentially leading to excessive C-heap allocation and denial of service. This flaw can be exploited by attackers using crafted .gd files, making it critical for developers and organizations utilizing Pillow for image processing to prioritize upgrading to version 12.3.0 or later to mitigate the risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55380
Severity
HIGH
CVSS
7.5
EPSS
0.42%

Original NVD Description

Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() read image dimensions from the GD 2.x header and stored them in self._size without calling Image._decompression_bomb_check(), allowing a crafted .gd file to trigger excessive C-heap allocation when loaded. This issue is fixed in version 12.3.0.

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