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CVE-2026-105826— ImageMagick before 7.1.2-30 Security Policy Bypass via MAT Decoder

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 6.9.13-55 之前版本以及 7.x 系列 7.1.2-30 之前版本中存在一个安全策略绕过漏洞。该漏洞出现在 MAT 解码器中，当读取高度压缩的数据时，解码器未强制执行配置的文件大小限制。攻击者可以构造一个精心设计的 MAT 图像文件，其解压后的数据会被写入临时文件，而这些临时文件的大小可能超过策略所允许的限制，从而消耗磁盘资源。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-105826

Vulnerability Information
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Vulnerability Title
ImageMagick before 7.1.2-30 Security Policy Bypass via MAT Decoder
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 6.9.13-55 and 7.x before 7.1.2-30 contains a security policy bypass in the MAT decoder, which does not enforce configured temporary file size limits when reading highly compressed data. Attackers can supply a crafted MAT image whose decompressed data is written to temporary files larger than the policy allows, consuming disk resources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ImageMagick ImageMagick 0 ~ 7.1.2-30 -
ImageMagick ImageMagick 0 ~ 6.9.13-55 -

II. Public POCs for CVE-2026-105826

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III. Intelligence Information for CVE-2026-105826

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Vendor Advisories for CVE-2026-105826 (1)

Other References for CVE-2026-105826 (1)

Same Patch Batch · ImageMagick · 2026-10-08 · 13 CVEs total

CVE-2026-105403 6.2 MEDIUM ImageMagick before 7.1.2-31 Security Policy Bypass via Coder Domain
CVE-2026-105824 5.9 MEDIUM ImageMagick before 7.1.2-30 Use-After-Free in RSVG Decoder Without Cairo
CVE-2026-105405 5.9 MEDIUM ImageMagick before 7.1.2-31 Invalid Memory Free in MVG Decoder
CVE-2026-105399 5.3 MEDIUM ImageMagick before 7.1.2-31 Denial of Service via MVG Decoder
CVE-2026-105825 5.3 MEDIUM ImageMagick before 7.1.2-30 Denial of Service via Crafted XMP Profile
CVE-2026-105404 5.3 MEDIUM ImageMagick before 7.1.2-31 Code Injection via PostScript Coders
CVE-2026-105827 5.3 MEDIUM ImageMagick before 7.1.2-30 Stack Overflow in CALS Decoder
CVE-2026-105401 5.3 MEDIUM ImageMagick before 7.1.2-31 Heap Buffer Overflow in Distributed Pixel Cache Server
CVE-2026-105400 5.3 MEDIUM ImageMagick before 7.1.2-31 Unclosed File Pointer via Magick Script
CVE-2026-105402 5.3 MEDIUM ImageMagick before 7.1.2-31 Denial of Service via XMP Profile Parsing
CVE-2026-105398 5.1 MEDIUM ImageMagick before 7.1.2-31 Heap Buffer Overflow via GetVirtualPixels API
CVE-2026-105823 4.0 MEDIUM ImageMagick before 7.1.2-31 Policy Bypass in CUT Encoder

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-409

V. Comments for CVE-2026-105826

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