What is CVE-2026-117539?

CVE-2026-117539 is a low-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-10-27.

How severe is CVE-2026-117539?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Darylldoyle Svg-Sanitizer

CVE-2026-117539

darylldoyle svg-sanitizer before 1.0.0 contains CSS injection and remote reference bypass vulnerabilities that allow attackers to embed external resources by uploading crafted SVG files. Attackers can use unsanitized style content, unquoted url() values, or image href attributes to exfiltrate page data, track users, or disclose visitor IP addresses.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-27 · last modified 2026-10-27.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Darylldoyle Svg-Sanitizer

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-qhmf-972w-m957 (vendor-advisory)
www.vulncheck.com/advisories/darylldoyle-svg-sanitizer-before-1.0.0-css-injecti… (third-party-advisory)

Frequently asked questions

What is CVE-2026-117539?: CVE-2026-117539 is a low-severity vulnerability in Darylldoyle Svg-Sanitizer, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-10-27.
How severe is CVE-2026-117539?: Low severity. CVSS v3 base score is 3.5 out of 10.