---
id: CVE-2026-107379
title: savg-sanitizer is a PHP SVG/XML sanitizer
summary: >-
  savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer
  allows a crafted SVG DTD with a #FIXED attribute default to make
  cleanAttributesOnWhitelist() perform a double DOMElement::removeAttribute()
  call on the same attrib…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: darylldoyle
product: svg-sanitizer
affected:
  - svg-sanitizer < 1.0.0
patched:
  - enshrined/svg-sanitize 1.0.0
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T21:35:53.890'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107379'
references:
  - url: >-
      https://github.com/darylldoyle/svg-sanitizer/commit/23877db7e76f1e1df5c3e65ab30239219c3d2867
    label: security-advisories@github.com
  - url: 'https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-v383-3rw5-q8rf
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107379'
  - url: 'https://github.com/advisories/GHSA-v383-3rw5-q8rf'
tags:
  - nvd
  - cve.org
  - ghsa
  - composer
aliases:
  - GHSA-v383-3rw5-q8rf
ecosystem: composer
ingestedAt: '2026-10-08T18:58:11.313Z'
---

## Overview

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer allows a crafted SVG DTD with a #FIXED attribute default to make cleanAttributesOnWhitelist() perform a double DOMElement::removeAttribute() call on the same attribute name in src/Sanitizer.php. The first removal deletes the explicit attribute, while the DTD default rematerializes the value before the href safety path performs the second removal, which can corrupt libxml state and terminate the PHP worker. An attacker who can submit SVG content to a sanitization endpoint can repeatedly interrupt workers and degrade or exhaust application availability. This issue is fixed in version 1.0.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-107379)

Affected packages:

- `enshrined/svg-sanitize <= 0.22.0`

Patched in:

- `enshrined/svg-sanitize 1.0.0`

Source: https://github.com/advisories/GHSA-v383-3rw5-q8rf