What’s Vulnerable › Vulnerabilities

CVE-2022-34473

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The HTML Sanitizer should have sanitized the <code>href</code> attribute of SVG <code>&lt;use&gt;</code> tags; however it incorrectly did not sanitize <code>xlink:href</code> attributes. This vulnerability affects Firefox < 102.

Affected products

• Mozilla Firefox: before 102.0 — fixed in 102.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 102.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1770888
• https://www.mozilla.org/security/advisories/mfsa2022-24/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1770888
• https://www.mozilla.org/security/advisories/mfsa2022-24/

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