Medium 5.3Published Jul 14, 2026

CVE-2026-48760Symfony: HtmlSanitizer URL Parser Deny Gates Underinclusive: Percent-Encoded BiDi Marks and Unicode Whitespace Bypass Visual-Spoofing Defense

Updated under an hour ago (Oct 26, 2026, 5:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for symfony

Exploited in the last 30 days

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlSanitizer::parse() rejected raw BiDi formatting characters but not percent-encoded forms and used an ASCII-only whitespace check, allowing sanitized URLs to retain visual-spoofing characters that downstream consumers could decode or display. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-451, CWE-1007
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

symfony symfony symfony:symfony (from the name)	from 6.1.0, < 6.4.41; from 7.0.0-BETA1, < 7.4.13; from 8.0.0-BETA1, < 8.0.13	CNA record
symfony html-sanitizer symfony:html_sanitizer (from the name)	from 6.1.0, < 6.4.41; from 7.0.0-BETA1, < 7.4.13; from 8.0.0-BETA1, < 8.0.13	CNA record
sensiolabs symfony sensiolabs:symfony	from 6.1.0 before 6.4.41; from 7.0.0 before 7.4.13; from 8.0.0 before 8.0.13	NVD

References

References

https://github.com/symfony/symfony/security/advisories/GHSA-v3wm-qf9p-c549	x-refsource-confirm, patch, vendor-advisory
https://github.com/symfony/symfony/commit/b21a626fd90f5c12d2db432c629eed3e780ba2f8	x-refsource-misc, patch
https://github.com/symfony/symfony/releases/tag/v6.4.41	x-refsource-misc, product, release-notes
https://github.com/symfony/symfony/releases/tag/v7.4.13	x-refsource-misc, product, release-notes
https://github.com/symfony/symfony/releases/tag/v8.0.13	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.