CVE-2026-121447— svg-sanitizer before 1.1.0 XSS via animateTransform on Safari

Quick assessment

Affected

darylldoyle svg-sanitizer

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.

在 1.1.0 版本之前的存在跨站脚本（XSS）漏洞，攻击者可通过在的属性中插入协议 URL 来绕过 sanitization（内容净化）。攻击者可上传特制的 SVG 文件，利用指向属性，从而在 Safari 用户点击该链接时执行任意 JavaScript 代码。

CVSS 6.1 · Medium Updated Nov 03, 2026

Possible ATT&CK Techniques 2 AI

T1203 · Exploitation for Client Execution T1059.007 · JavaScript

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Vulnerability Information

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Vulnerability Title

svg-sanitizer before 1.1.0 XSS via animateTransform on Safari

Source: CVE Program / CVE List V5

Vulnerability Description

svg-sanitizer before 1.1.0 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization by placing javascript: URLs in the animateTransform values attribute. Attackers can upload crafted SVG files whose animateTransform targets the href attribute, executing arbitrary JavaScript when Safari users click the link.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
darylldoyle	svg-sanitizer	0 ~ 1.1.0	-

II. Public POCs for CVE-2026-121447

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-121447

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Other References for CVE-2026-121447 (2)

https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-q546-85r6-f39q vendor-advisory
https://www.vulncheck.com/advisories/svg-sanitizer-before-1.1.0-xss-via-animatetransform-on-safari third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-121447

Same Patch Batch · darylldoyle · 2026-11-03 · 5 CVEs total

CVE-2026-121444	7.5 HIGH	svg-sanitizer 0.11.0 before 1.1.0 Algorithmic Complexity DoS via use Reference Graph
CVE-2026-121445	5.9 MEDIUM	svg-sanitizer 1.0.0 before 1.1.0 ReDoS and Fail-Open via image-set CSS Stripping
CVE-2026-121443	5.3 MEDIUM	svg-sanitizer from 1.1.0 before 1.1.1 Denial of Service via Unclosed Tag
CVE-2026-121446	4.3 MEDIUM	svg-sanitizer 0.5.0 before 1.1.0 Incomplete url() Filtering in SVG Attributes

IV. Related Vulnerabilities

Same product: svg-sanitizer

Same vendor: darylldoyle

Same weakness: CWE-79