CVE-2026-29074
SVGO: DoS through entity expansion in DOCTYPE (Billion Laughs)
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.
INFO
Published Date :
March 6, 2026, 8:16 a.m.
Last Modified :
March 10, 2026, 7:02 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update SVGO to version 2.8.1 or later.
- Update SVGO to version 3.3.3 or later.
- Update SVGO to version 4.0.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-29074.
| URL | Resource |
|---|---|
| https://github.com/svg/svgo/security/advisories/GHSA-xpqw-6gx7-v673 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-29074 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-29074
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-29074 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-29074 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 10, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:* versions from (including) 2.1.0 up to (excluding) 2.8.1 *cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:* versions from (including) 3.0.0 up to (excluding) 3.3.3 *cpe:2.3:a:svgo:svgo:*:*:*:*:*:node.js:*:* versions from (including) 4.0.0 up to (excluding) 4.0.1 Added Reference Type GitHub, Inc.: https://github.com/svg/svgo/security/advisories/GHSA-xpqw-6gx7-v673 Types: Exploit, Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Mar. 06, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-776 Added Reference https://github.com/svg/svgo/security/advisories/GHSA-xpqw-6gx7-v673