CVE-2026-121447 json
svg-sanitizer before 1.1.0 XSS via animateTransform on Safari
published 6d ago modified 10h ago also EUVD-2026-115869
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- darylldoyle svg-sanitizer 1.1.0
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 11h ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-q546-85r6-f39q referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | 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 |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- darylldoyle svg-sanitizer
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/darylldoyle/svg-sanitizer/security/advisories/GHSA-q546-85r6-f39q
vendor-advisory, exploit
-
vulncheck.com
/advisories/svg-sanitizer-before-1.1.0-xss-via-animatetransform-on-safari
third-party-advisory
Sources
- CVE List CVE-2026-121447
- NVD CVE-2026-121447
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.