CVE-2026-29074
SVGO: DoS through entity expansion in DOCTYPE (Billion Laughs)
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.64 % · percentile 50 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-776 — XML Entity Expansion (XEE / Billion Laughs)
References
- https://github.com/svg/svgo/security/advisories/GHSA-xpqw-6gx7-v673
- https://access.redhat.com/security/cve/CVE-2026-29074
- https://bugzilla.redhat.com/show_bug.cgi?id=2445132
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29074.json
- https://access.redhat.com/errata/RHSA-2026:13512
- https://access.redhat.com/errata/RHSA-2026:6277
- https://access.redhat.com/errata/RHSA-2026:7110
- https://access.redhat.com/errata/RHSA-2026:13553
- https://access.redhat.com/errata/RHSA-2026:6309
- https://access.redhat.com/errata/RHSA-2026:13545
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/errata/RHSA-2026:13826
- https://access.redhat.com/errata/RHSA-2026:5807
- https://access.redhat.com/errata/RHSA-2026:24977
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/errata/RHSA-2026:21772
- https://access.redhat.com/errata/RHSA-2026:8483
- https://access.redhat.com/errata/RHSA-2026:8484
- https://access.redhat.com/errata/RHSA-2026:8490
- https://access.redhat.com/errata/RHSA-2026:8491
- https://access.redhat.com/errata/RHSA-2026:8493
- https://access.redhat.com/errata/RHSA-2026:11916
- https://access.redhat.com/errata/RHSA-2026:11856
- https://access.redhat.com/errata/RHSA-2026:21017
- https://access.redhat.com/errata/RHSA-2026:6568
- https://access.redhat.com/errata/RHSA-2026:19375
- https://access.redhat.com/errata/RHSA-2026:22465
- https://access.redhat.com/errata/RHSA-2026:48085
- https://access.redhat.com/errata/RHSA-2026:6926
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-xpqw-6gx7-v673 — SVGO DoS through entity expansion in DOCTYPE (Billion Laughs)
European references
- ENISA EUVD · EUVD-2026-10022
- GCVE · GCVE-0-2026-29074
CERT-FR advisories
- CERTFR-2026-AVI-0500 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:*≥ 2.1.0 < 2.8.1cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:*≥ 3.0.0 < 3.3.3cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:*≥ 4.0.0 < 4.0.1
Affected products
| Product | Versions |
|---|---|
| svg · svgo | affected >= 2.1.0, < 2.8.1 ; affected >= 3.0.0, < 3.3.3 ; affected = 4.0.0 |
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 |