7.5

CVE-2026-29074: SVGO: DoS through entity expansion in DOCTYPE (Billion Laughs)

Modified
AliasesCGA-3h83-p266-fcpmCGA-j294-h3m6-2449GHSA-xpqw-6gx7-v673
Published 06-03-2026Last modified 10-09-2026

Vulnerability summary

CVE-2026-29074 is a high (CVSS 7.5) XML Entity Expansion vulnerability in svg svgo. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 61.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.97%
0%100%
Low · +0.36 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
OPENSUSE-SU-2026:12070-1RHSA-2026:13512RHSA-2026:6277CGA-QJ8M-G84M-PXM8

Timeline

  1. 06-03-2026
    PublishedVulnerability first disclosed.
  2. 10-09-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.97%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

Increase +0.36 pp

From 0.61% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Svgo

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Chainguard8 products
  • airflow-2All versions (No fix recorded)
  • airflow-core-2All versions (No fix recorded)
  • arangodb-3.11< 3.11.14.5-r2
  • arangodb-3.12< 3.12.9.4-r15
  • librechat< 0.8.3-r0
Debian1 product
  • node-svgo< 3.3.5+ds-1
Npm1 product
  • svgo≥ 2.1.0, < 2.8.1 | ≥ 3.0.0, < 3.3.3 | ≥ 4.0.0, < 4.0.1
Svg1 product
  • svgo≥ 2.1.0, < 2.8.1 | ≥ 3.0.0, < 3.3.3 | = 4.0.0
Svgo1 product
  • svgo≥ 2.1.0, < 2.8.1 | ≥ 3.0.0, < 3.3.3 | ≥ 4.0.0, < 4.0.1
Wolfi1 product
  • vitess-23< 23.0.3-r7

6 vendors · 13 products

References

33 links
Show all 33 references