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CVE-2026-23876— Heap buffer overflow with attacker-controlled data in XBM parser

Quick assessment

Affected
ImageMagick ImageMagick
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 8.1 · High EPSS 0.66% · P50

Affected Version Matrix 2

VendorProduct Version RangeStatus
ImageMagick ImageMagick < 7.1.2-13 affected
< 6.9.13-38 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-23876

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Vendor Advisories for CVE-2026-23876 (1)

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
Same vendor: ImageMagick
Same weakness: CWE-122

V. Comments for CVE-2026-23876

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