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CVE-2026-6491— libvips nip2 vips7compat.c im_minpos_vec heap-based overflow

Quick assessment

Affected
n/a libvips
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.

libvips是libvips开源的一个具有低内存需求的快速图像处理库。 libvips 8.18.2及之前版本存在安全漏洞，该漏洞源于对文件libvips/deprecated/vips7compat.c中参数n的操作，可能导致堆缓冲区溢出。

CVSS 5.3 · Medium EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-6491

Vulnerability Information
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Vulnerability Title
libvips nip2 vips7compat.c im_minpos_vec heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in libvips up to 8.18.2. The affected element is the function im_minpos_vec of the file libvips/deprecated/vips7compat.c of the component nip2 Handler. Such manipulation of the argument n leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The vendor confirms that they will "be removing the deprecated area in libvips 8.19".
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
libvips 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libvips是libvips开源的一个具有低内存需求的快速图像处理库。 libvips 8.18.2及之前版本存在安全漏洞，该漏洞源于对文件libvips/deprecated/vips7compat.c中参数n的操作，可能导致堆缓冲区溢出。
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
- libvips 8.18.0 cpe:2.3:a:libvips:libvips:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6491

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III. Intelligence Information for CVE-2026-6491

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Proof of Concept for CVE-2026-6491 (2)

Other References for CVE-2026-6491 (1)

Same Patch Batch · n/a · 2026-04-17 · 5 CVEs total

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CVE-2026-31317 craftql 安全漏洞
CVE-2025-70795 Safetica Application 安全漏洞

IV. Related Vulnerabilities

Same product: libvips
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2026-6491

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