What is CVE-2024-26283?

CVE-2024-26283 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Neutralization of Script in Attributes in a Web Page. CVSS score: 7.8/10. Published 2024-02-22.

How severe is CVE-2024-26283?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2024-26283 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Mozilla Firefox

CVE-2024-26283

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.

EPSS: 0.003 (19.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mozilla Firefox
Mozilla Firefox For Ios — versions unspecified

Weakness classification (CWE)

CWE-83 — Improper Neutralization of Script in Attributes in a Web Page

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security@mozilla.org (Issue Tracking)
security@mozilla.org (Vendor Advisory)

Frequently asked questions

What is CVE-2024-26283?: CVE-2024-26283 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Neutralization of Script in Attributes in a Web Page. CVSS score: 7.8/10. Published 2024-02-22.
How severe is CVE-2024-26283?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2024-26283 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.