CVE-2026-42308— Pillow: Integer overflow when processing fonts
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I. Basic Information for CVE-2026-42308
Vulnerability Information
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Vulnerability Title
Pillow: Integer overflow when processing fonts
Source: NVD (National Vulnerability Database)
Vulnerability Description
Pillow is a Python imaging library. Prior to version 12.2.0, if a font advances for each glyph by an exceeding large amount, when Pillow keeps track of the current position, it may lead to an integer overflow. This issue has been patched in version 12.2.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
Pillow 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pillow是Pillow开源的一款基于Python的图像处理库。 Pillow 12.2.0之前版本存在输入验证错误漏洞，该漏洞源于字体每个字形前进量过大时可能导致整数溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| python-pillow | Pillow | < 12.2.0 | - |
II. Public POCs for CVE-2026-42308
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|---|
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- Release 12.2.0 · python-pillow/Pillow · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-42308
Same Patch Batch · python-pillow · 2026-05-09 · 4 CVEs total
| CVE-2026-42311 | Pillow: OOB Write with Invalid PSD Tile Extents (Integer Overflow) | |
| CVE-2026-42310 | Pillow: PDF Parsing Trailer Infinite Loop (DoS) | |
| CVE-2026-42309 | Pillow: Heap buffer overflow with nested list coordinates |
IV. Related Vulnerabilities
Same product: Pillow
- CVE-2026-42311
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Ove - CVE-2026-42310
Pillow: PDF Parsing Trailer Infinite Loop (DoS) - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-40192
Pillow is vulnerable to a FITS GZIP decompression bomb - CVE-2026-25990
Pillow has an out-of-bounds write when loading PSD images
Same vendor: python-pillow
- CVE-2026-42311
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Ove - CVE-2026-42310
Pillow: PDF Parsing Trailer Infinite Loop (DoS) - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-40192
Pillow is vulnerable to a FITS GZIP decompression bomb - CVE-2026-25990
Pillow has an out-of-bounds write when loading PSD images
Same weakness: CWE-190
- CVE-2021-26380
Trusted OS驱动内存越界致完整性丢失 - CVE-2026-44673
libyang: lyb_read_string() integer overflow → heap buffer ov - CVE-2026-44637
libsixel: integer overflow in parser - CVE-2026-43905
OpenImageIO: JPEG2000 (OpenJPH) signed integer overflow in b - CVE-2026-43907
OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal
V. Comments for CVE-2026-42308
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