TI-2026-65751 Aliases CVE-2026-103686 GHSA-qjw9-86r9-fqqc

rhukster dom-sanitizer URL Validation DOMSanitizer.php isDangerousUrl cross site scripting

MEDIUM 56CWE-79Published 2026-10-01 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting, Code execution
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

A flaw has been found in rhukster dom-sanitizer up to 1.0.15. Impacted is the function DOMSanitizer::isDangerousUrl of the file src/DOMSanitizer.php of the component URL Validation. This manipulation causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been published and may be used. Upgrading to version 1.0.16 is recommended to address this issue. Patch name: 4623b565d060bc02ca5a07d8c8241fe28e2edfda. It is suggested to upgrade the affected component.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00208 10th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed dom-sanitizer (rhukster): 1.0.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
rhukster	dom-sanitizer	1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.0.10; 1.0.11; 1.0.12; 1.0.13; 1.0.14; 1.0.15	1.0.16	Patch available	CNA

dom-sanitizer Vendorrhukster Affected 1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.0.10; 1.0.11; 1.0.12; 1.0.13; 1.0.14; 1.0.15 Fixed in 1.0.16 Patch available CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rhukster:dom-sanitizer::::::::	—	—	rhukster

cpe:2.3:a:rhukster:dom-sanitizer:*:*:*:*:*:*:*:* Versions — — ·rhukster

Remediation

Fix · CNA dom-sanitizer (rhukster) Fixed in 1.0.16

Timeline

2026-10-02 Threatist record created from CVE-2026-103686
2026-10-03 Alias added: GHSA-qjw9-86r9-fqqc
2026-10-06 CISA SSVC decision points changed
2026-10-06 Priority changed: LOW → MEDIUM

References

Exploit 1

https://github.com/rhukster/dom-sanitizer/security/advisories/GHSA-mrpv-6x26-mf6c

Patch 2

Other 1

https://github.com/rhukster/dom-sanitizer/

TI-2026-65752 rhukster dom-sanitizer SVG Sanitization DOMSanitizer.php url incomplete blacklist CVSS 4.0MEDIUM 6.9
TI-2026-64648 Improper input validation in rhukster dom-sanitizer CVSS 3.1MEDIUM 4.7
TI-2026-29079 rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives CVSS 3.1MEDIUM 4.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences