enshrined/svg-sanitize: Denial of Service via DTD Attribute Declaration Crash

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-107379
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-08 18:17:23 UTC
Updated2026-10-09 12:17:08 UTC
Descriptionsavg-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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

EPSS: 0.003760000 probability, percentile 0.295760000 (date 2026-10-10)

Problem Types: CWE-770 | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Darylldoyle Svg-sanitizer affected < 1.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/darylldoyle/svg-sanitizer/commit/23877db7e76f1e1df5c3e65ab302... [email protected] github.com
github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-v383-3rw5-... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0 [email protected] github.com
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