CVE-2023-37207

A website could have obscured the fullscreen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-25)

CWE

CWE-470

Published

2023-07-05

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• debian:debian_linux
• mozilla:firefox
• mozilla:firefox_esr
• mozilla:thunderbird

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1816287
• https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html
• https://lists.debian.org/debian-lts-announce/2023/07/msg00015.html
• https://www.debian.org/security/2023/dsa-5450
• https://www.debian.org/security/2023/dsa-5451

Check your stackJSON