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Description

SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files. From version 2.1.0 to before version 2.8.1, from version 3.0.0 to before version 3.3.3, and before version 4.0.1, SVGO accepts XML with custom entities, without guards against entity expansion or recursion. This can result in a small XML file (811 bytes) stalling the application and even crashing the Node.js process with JavaScript heap out of memory. This issue has been patched in versions 2.8.1, 3.3.3, and 4.0.1.

PUBLISHED Reserved 2026-03-03 | Published 2026-03-06 | Updated 2026-03-06 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Product status

>= 2.1.0, < 2.8.1
affected

>= 3.0.0, < 3.3.3
affected

= 4.0.0
affected

References

github.com/svg/svgo/security/advisories/GHSA-xpqw-6gx7-v673

cve.org (CVE-2026-29074)

nvd.nist.gov (CVE-2026-29074)

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