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CVE-2026-73650— SVGO: removeScripts plugin leaves some executable scripts intact

Quick assessment

Affected
svg svgo
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SVGO是svg组织开源的一款优化SVG图形的命令行工具。 svg SVGO 1.0.0至2.8.3之前版本、3.0.0至3.3.4之前版本和4.0.0至4.0.2之前版本存在安全漏洞，该漏洞源于removeScripts插件未移除命名空间或带前缀的脚本元素（如<svg:script>），且在版本3和4中对JavaScript URI匹配区分大小写，可能导致其他用户打开SVG时脚本执行，暴露本地存储或Cookie。

CVSS 8.2 · High EPSS 0.43% · P36

Affected Version Matrix 3

VendorProduct Version RangeStatus
svg svgo >= 1.0.0, < 2.8.3 affected
>= 3.0.0, < 3.3.4 affected
>= 4.0.0, < 4.0.2 affected
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I. Basic Information for CVE-2026-73650

Vulnerability Information
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Vulnerability Title
SVGO: removeScripts plugin leaves some executable scripts intact
Source: CVE Program / CVE List V5
Vulnerability Description
SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files. From version 1.0.0 until versions 2.8.3, 3.3.4, and 4.0.2, the removeScripts plugin, named removeScriptElement in versions 1 through 3, can leave executable content in optimized SVGs because it does not remove namespaced or prefixed script elements such as <svg:script> and, in versions 3 and 4, matches JavaScript URIs case sensitively. Applications that process untrusted SVG input with this plugin enabled and serve the result can allow scripts to execute when another user opens the SVG, exposing local storage or cookies. This issue is fixed in versions 2.8.3, 3.3.4, and 4.0.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
svg SVGO 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SVGO是svg组织开源的一款优化SVG图形的命令行工具。 svg SVGO 1.0.0至2.8.3之前版本、3.0.0至3.3.4之前版本和4.0.0至4.0.2之前版本存在安全漏洞，该漏洞源于removeScripts插件未移除命名空间或带前缀的脚本元素（如<svg:script>），且在版本3和4中对JavaScript URI匹配区分大小写，可能导致其他用户打开SVG时脚本执行，暴露本地存储或Cookie。
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
svg svgo >= 1.0.0, < 2.8.3 -

II. Public POCs for CVE-2026-73650

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
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claude_code · 6692 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-73650

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Patches & Fixes for CVE-2026-73650 (4)

Vendor Advisories for CVE-2026-73650 (1)

Vendor Pages for CVE-2026-73650 (2)

IV. Related Vulnerabilities

Same product: svgo
Same vendor: svg
Same weakness: CWE-79

V. Comments for CVE-2026-73650

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