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

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- darylldoyle / svg-sanitizer: ≥ 0; < 1.1.0 (affected, semver); 1.1.0 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-q546-85r6-f39q (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/svg-sanitizer-before-1.1.0-xss-via-animatetransform-on-safari (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121447; retrieved 2026-11-03; source updated 2026-11-03

Revision: e39b24ea8cf05be62822025e469430dd7681253c22570d990b6f716139f77709

Canonical: https://y2.dev/cve/CVE-2026-121447

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Collected public records only. Check source status for coverage and freshness.