Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow's documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.
References
| Link | Resource |
|---|---|
| https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst | Release Notes |
| https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d | Patch |
| https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc | Exploit Vendor Advisory |
| https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc | Exploit Vendor Advisory |
Configurations
History
07 Jul 2026, 18:59
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* | |
| First Time |
Python
Python pillow |
|
| References | () https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst - Release Notes | |
| References | () https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d - Patch | |
| References | () https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc - Exploit, Vendor Advisory |
06 Jul 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc - |
06 Jul 2026, 19:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-06 19:17
Updated : 2026-07-07 18:59
NVD link : CVE-2026-55379
Mitre link : CVE-2026-55379
CVE.ORG link : CVE-2026-55379
JSON object : View
Products Affected
python
- pillow
CWE
CWE-789
Memory Allocation with Excessive Size Value