What’s Vulnerable › Vulnerabilities

CVE-2024-26283

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-22 · updated 2026-06-17
• Weakness: CWE-83

Description

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme. This vulnerability affects Firefox for iOS < 123.

Affected products

• Mozilla Firefox: before 123.0 — fixed in 123.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 123.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1850158
• https://www.mozilla.org/security/advisories/mfsa2024-08/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1850158
• https://www.mozilla.org/security/advisories/mfsa2024-08/

Get alerted when CVE-2024-26283 or the next vulnerability affects your stack