CVE-2026-48761

MEDIUM

Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes on <object>, <applet>, <iframe>, <img> and the URL Inside <meta http-equiv="refresh"> content

Title source: cna
STIX 2.1

Description

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, UrlAttributeSanitizer::getSupportedAttributes() omitted URL-bearing attributes on <object>, <applet>, <iframe>, and <img>, and <meta http-equiv="refresh"> URLs inside content bypassed URL sanitization, allowing explicitly enabled elements or attributes to pass javascript: and similar payloads into sanitized output. This issue is fixed in versions 6.4.41, 7.4.13, and 8.0.13.

References (5)

Core 5

Scores

CVSS v3 6.1
EPSS 0.0027
EPSS Percentile 18.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-1023 CWE-79
Status published
Products (7)
sensiolabs/symfony 6.1.0 - 6.4.41
symfony/html-sanitizer >= 6.1.0, < 6.4.41
symfony/html-sanitizer >= 7.0.0-BETA1, < 7.4.13
symfony/html-sanitizer >= 8.0.0-BETA1, < 8.0.13
symfony/symfony >= 6.1.0, < 6.4.41
symfony/symfony >= 7.0.0-BETA1, < 7.4.13
symfony/symfony >= 8.0.0-BETA1, < 8.0.13
Published Jul 14, 2026
Tracked Since Jul 15, 2026