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…
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By mozilla
- 7 days later
· 7 days later
Published
- 20 months later
· 20 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.74% · top 45% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- Fullscreen notification obscured
- CWE-470 (opens in a new tab)All about CWE-470 and its CVEs
Affected products
- affected unspecified – < 115
- affected unspecified – < 102.13
- affected unspecified – < 102.13
References (8)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1816287 (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-22/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-23/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2023-24/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5450 (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5451 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/07/msg00015.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-37207)Record last updated .