SVGO: removeScripts incompletely sanitizes executable HTML in SVG foreignObject elements (svg svgo)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.43 % · percentile 37 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Deferred
Description
SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files. From version 1.0.0 until versions 2.8.4, 3.3.5, and 4.1.0, the opt-in removeScripts plugin, named removeScriptElement in versions 2 and 3 and implemented in plugins/removeScripts.js, removes SVG and XHTML script elements but does not inspect executable HTML content inside SVG foreignObject elements. Event-handler attributes such as onload and onbeforetoggle, srcdoc documents, and executable URLs in the action, data, formaction, href, and src attributes can remain in attacker-controlled SVG input. When an application uses the plugin as its only protection and serves the optimized SVG in an active browser context, the payload can execute script in the viewer's origin, expose data, modify content, or perform actions as the victim. This issue is fixed in versions 2.8.4, 3.3.5, and 4.1.0.
Weaknesses (CWE)
- CWE-79 — Improper Neutralization of Input During Web Page Generation
References
- https://github.com/svg/svgo/security/advisories/GHSA-4vpr-x523-8j87
- https://github.com/svg/svgo/pull/2264
- https://github.com/svg/svgo/pull/2269
- https://github.com/svg/svgo/pull/2272
- https://github.com/svg/svgo/commit/0557385564a5c6c11d76cd934a6cff94451e532c
- https://github.com/svg/svgo/commit/994a9f00d79ddec68ce19a1ce9eb8ca08d747e4f
- https://github.com/svg/svgo/commit/fd51e474a300417d9361d9302d596b1763146327
- https://github.com/svg/svgo/releases/tag/v2.8.4
- https://github.com/svg/svgo/releases/tag/v3.3.5
- https://github.com/svg/svgo/releases/tag/v4.1.0
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-4vpr-x523-8j87 — SVGO: removeScripts incompletely sanitizes executable HTML in SVG foreignObject elements
European references
- ENISA EUVD · EUVD-2026-69651
- GCVE · GCVE-0-2026-84369
CERT-FR advisories
- CERTFR-2026-AVI-1293 — Multiples vulnérabilités dans MongoDB · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| svg · svgo | affected >= 1.0.0, < 2.8.4 ; affected >= 3.0.0, < 3.3.5 ; affected >= 4.0.0, < 4.1.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |