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.
CVE-2023-40013
This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 62% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 48(Track*)EG Risk 48/100SSVC: Track*
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS PROB
- 0%
- EPSS %ILE
- 38%
- KEV
- Not listed
Published
August 14, 2023
Last Modified
November 21, 2024
References (8)
- security-advisories@githubhttps://github.com/shubhamjain/svg-loader/blob/main/svg-loader.js#L125-L128
- security-advisories@githubhttps://github.com/shubhamjain/svg-loader/commit/d3562fc08497aec5f33eb82017fa1417b3319e2c
- security-advisories@githubhttps://github.com/shubhamjain/svg-loader/security/advisories/GHSA-xc2r-jf2x-gjr8
- security-advisories@githubhttps://github.com/shubhamjain/svg-loader/tree/main#2-enable-javascript
- af854a3a-2127-422b-91ae-364da2661108https://github.com/shubhamjain/svg-loader/blob/main/svg-loader.js#L125-L128
- af854a3a-2127-422b-91ae-364da2661108https://github.com/shubhamjain/svg-loader/commit/d3562fc08497aec5f33eb82017fa1417b3319e2c
- af854a3a-2127-422b-91ae-364da2661108https://github.com/shubhamjain/svg-loader/security/advisories/GHSA-xc2r-jf2x-gjr8
- af854a3a-2127-422b-91ae-364da2661108https://github.com/shubhamjain/svg-loader/tree/main#2-enable-javascript
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| external-svg-loader | — | 1.6.9 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 47× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 111 total refreshes for this CVE.
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Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2023-40013?
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What is the CVSS score of CVE-2023-40013?
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Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-40013
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