CVE-2026-103686: rhukster dom-sanitizer

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

CVSS 5.1 MediumEPSS 0.0021 · 10th percentile

Published by the CVE Program (CNA: VulDB) at 1 Oct 2026, 13:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
rhukster	dom-sanitizer	affected 1.0.0 affected 1.0.1 affected 1.0.2 affected 1.0.3 affected 1.0.4 affected 1.0.5 affected 1.0.6 affected 1.0.7 affected 1.0.8 affected 1.0.9 affected 1.0.10 affected 1.0.11 and 5 more

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.1	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P	CNA (VulDB)Used for this record
3.5	Low	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C	CNA (VulDB)
3.5	Low	3.0	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C	CNA (VulDB)
4.0	Medium	2.0	AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0021, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/412550 vdb-entrytechnical-description
vuldb.com/vuln/412550/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-103686 third-party-advisory
vuldb.com/submit/958312 third-party-advisory
github.com/rhukster/dom-sanitizer/commit/4623b565d060bc02ca5a07d8c8241fe28e2edfda patch
github.com/rhukster/dom-sanitizer/releases/tag/1.0.16 patch
github.com/rhukster/dom-sanitizer/ product
github.com/rhukster/dom-sanitizer/security/advisories/GHSA-mrpv-6x26-mf6c exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.