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CVE-2026-61866— ImageMagick before 7.1.2-26 Memory Leak in JNG encoder

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团队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 7.1.2-26之前版本存在资源管理错误漏洞，该漏洞源于在JNG编码器中当blob无法打开时存在内存泄漏，攻击者通过提供无法进行blob操作的畸形JNG文件触发内存泄漏，导致资源耗尽。

CVSS 2.9 · Low EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
ImageMagick ImageMagick < 7.1.2-26 affected
7.1.2-26 unaffected
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I. Basic Information for CVE-2026-61866

Vulnerability Information
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Vulnerability Title
ImageMagick before 7.1.2-26 Memory Leak in JNG encoder
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
ImageMagick 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ImageMagick是ImageMagick团队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 7.1.2-26之前版本存在资源管理错误漏洞，该漏洞源于在JNG编码器中当blob无法打开时存在内存泄漏，攻击者通过提供无法进行blob操作的畸形JNG文件触发内存泄漏，导致资源耗尽。
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 0 ~ 7.1.2-26 -

II. Public POCs for CVE-2026-61866

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III. Intelligence Information for CVE-2026-61866

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Vendor Advisories for CVE-2026-61866 (2)

Same Patch Batch · ImageMagick · 2026-07-15 · 14 CVEs total

CVE-2026-61868 3.7 LOW ImageMagick before 7.1.2-26 Memory Leak in YUV Decoder
CVE-2026-61871 3.7 LOW ImageMagick before 7.1.2-26 Memory Leak in ICON decoder
CVE-2026-61860 3.7 LOW ImageMagick before 7.1.2-26 Use-After-Free via freetype
CVE-2026-61859 3.3 LOW ImageMagick before 7.1.2-26 Policy Bypass via script operation
CVE-2026-56375 3.3 LOW ImageMagick - Memory Leak in ASHLAR Coder Action Failure
CVE-2026-61863 2.9 LOW ImageMagick before 7.1.2-26 Memory Leak in TIFF Encoder
CVE-2026-61862 2.9 LOW ImageMagick before 7.1.2-26 Information Disclosure via identify
CVE-2026-61864 2.9 LOW ImageMagick before 7.1.2-26 Memory Leak in Log Colorspace
CVE-2026-61867 2.9 LOW ImageMagick before 7.1.2-26 Memory Leak in TIFF Encoder
CVE-2026-61865 2.9 LOW ImageMagick before 7.1.2-26 Memory Leak in Hough Lines
CVE-2026-61869 2.9 LOW ImageMagick before 7.1.2-26 Memory Leak in MIFF Encoder
CVE-2026-61872 2.5 LOW ImageMagick before 7.1.2-26 Memory Leak via TIFF Encoder
CVE-2026-61464 1.8 LOW ImageMagick before 7.1.2-26 Heap Buffer Over-Write via X11

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-401