Vulnerability in Mozilla Firefox
CVE-2023-5721
It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
EPSS: 0.008 (52.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
- Debian Debian_linux — versions 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (Issue Tracking, Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
- security@mozilla.org (Third Party Advisory)
- security@mozilla.org (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-5721?
- CVE-2023-5721 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 4.3/10. Published 2023-10-25.
- How severe is CVE-2023-5721?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2023-5721 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.