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Vulnerability details: VCID-ks7y-r4ph-6fem
Vulnerability ID VCID-ks7y-r4ph-6fem
Aliases CVE-2023-40013
GHSA-xc2r-jf2x-gjr8
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') SVG Loader is a javascript library that fetches SVGs using XMLHttpRequests and injects the SVG code in the tag's place. According to the docs, svg-loader will strip all JS code before injecting the SVG file for security reasons but the input sanitization logic is not sufficient and can be trivially bypassed. This allows an attacker to craft a malicious SVG which can result in Cross-site Scripting (XSS). When trying to sanitize the svg the lib removes event attributes such as `onmouseover`, `onclick` but the list of events is not exhaustive. Any website which uses external-svg-loader and allows its users to provide svg src, upload svg files would be susceptible to stored XSS attack. This issue has been addressed in commit `d3562fc08` which is included in releases from 1.6.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
There are no known severity scores.
Reference id Reference type URL
https://github.com/shubhamjain/svg-loader/blob/main/svg-loader.js#L125-L128
https://github.com/shubhamjain/svg-loader/commit/d3562fc08497aec5f33eb82017fa1417b3319e2c
https://github.com/shubhamjain/svg-loader/tree/main#2-enable-javascript
CVE-2023-40013 https://nvd.nist.gov/vuln/detail/CVE-2023-40013
GHSA-xc2r-jf2x-gjr8 https://github.com/advisories/GHSA-xc2r-jf2x-gjr8
GHSA-xc2r-jf2x-gjr8 https://github.com/shubhamjain/svg-loader/security/advisories/GHSA-xc2r-jf2x-gjr8
No exploits are available.
There are no known vectors.

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-06-02T04:45:34.861490+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/external-svg-loader/CVE-2023-40013.yml 38.6.0