Riskcovery

CVE-2026-48761

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

State
Published
Severity
5.3 Medium
Published
Jul 14, 2026
Updated
Jul 21, 2026
Reserved
May 22, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.05.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:NGitHub_M

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-1023 Incomplete Comparison with Missing Factors

Affected Products

ProductVersions
symfonysymfony
  • >= 6.1.0, < 6.4.41Affected
  • >= 7.0.0-BETA1, < 7.4.13Affected
  • >= 8.0.0-BETA1, < 8.0.13Affected
html-sanitizersymfony
  • >= 6.1.0, < 6.4.41Affected
  • >= 7.0.0-BETA1, < 7.4.13Affected
  • >= 8.0.0-BETA1, < 8.0.13Affected

References

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