CVE-2026-23876— Heap buffer overflow with attacker-controlled data in XBM parser
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I. Basic Information for CVE-2026-23876
Vulnerability Information
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Vulnerability Title
Heap buffer overflow with attacker-controlled data in XBM parser
Source: NVD (National Vulnerability Database)
Vulnerability Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data past the allocated heap buffer when processing a maliciously crafted image file. Any operation that reads or identifies an image can trigger the overflow, making it exploitable via common image upload and processing pipelines. Versions 7.1.2-13 and 6.9.13-38 fix the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
ImageMagick 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ImageMagick是ImageMagick开源的一套开源的图像处理软件。可读取、转换或写入多种格式的图片。 ImageMagick 7.1.2-13之前版本和6.9.13-38之前版本存在输入验证错误漏洞，该漏洞源于XBM图像解码器存在堆缓冲区溢出，可能导致处理恶意图像文件时写入受控数据。
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 |
|---|---|---|---|---|
| ImageMagick | ImageMagick | < 7.1.2-13 | - |
II. Public POCs for CVE-2026-23876
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · ImageMagick · 2026-01-20 · 3 CVEs total
| CVE-2026-22770 | 6.5 MEDIUM | ImageMagick vulnerable to Release of Invalid Pointer in BilateralBlur when memory allocati |
| CVE-2026-23874 | 5.5 MEDIUM | ImageMagick's MSL: Stack overflow via infinite recursion in ProcessMSLScript |
IV. Related Vulnerabilities
Same product: ImageMagick
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ImageMagick: Heap out-of-bounds write in JP2 encoder - CVE-2026-40183
ImageMagick: Heap buffer overflow when encoding JXL image wi - CVE-2026-40169
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS
Same vendor: ImageMagick
- CVE-2026-40312
ImageMagick: Off-by-One in MSL decoder could result in crash - CVE-2026-40311
ImageMagick: Heap-use-after-free via XMP profile could resul - CVE-2026-40310
ImageMagick: Heap out-of-bounds write in JP2 encoder - CVE-2026-40183
ImageMagick: Heap buffer overflow when encoding JXL image wi - CVE-2026-40169
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS
Same weakness: CWE-122
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