CSS Injection and Remote Reference Bypass in Darylldoyle SVG Sanitizer
CVE-2026-117539

5.1MEDIUM

Key Information:

Vendor

Darylldoyle

Status
Svg-sanitizer
Vendor
CVE Published:
27 October 2026

What is CVE-2026-117539?

Darylldoyle SVG Sanitizer versions prior to 1.0.0 are susceptible to vulnerabilities that permit CSS injection and remote reference bypass. These issues enable attackers to upload specially crafted SVG files, which can contain unsanitized style content and unquoted url() values. Through this exploitation, attackers may embed external resources to exfiltrate sensitive page data, track user behavior, or potentially disclose visitor IP addresses.

Affected Version(s)

svg-sanitizer 0 < 1.0.0

svg-sanitizer 1.0.0

References

https://github.com/darylldoyle/svg-sanitizer/security/adv...
vendor-advisory
https://www.vulncheck.com/advisories/darylldoyle-svg-sani...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ExPatch-LLC
.