VDB
CVE-2023-4053
CVE-2023-4053
PUBLISHED
Full screen notification obscured by external program
Reported by mozilla · Published August 1, 2023
A website could have obscured the full screen 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 < 116, Firefox ESR < 115.2, and Thunderbird < 115.2.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| firefox-esr | Chainguard | 116.0-r0 |
| firefox-esr | Alpine | 115.2.0-r0 |
| Thunderbird | Mozilla | 115.2 |
| Firefox | Mozilla | 116.0, 116 |
| Firefox ESR | Mozilla | 115.2 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified |
| Mozilla | Firefox ESR | unspecified |
| Mozilla | Thunderbird | unspecified |
| Mozilla | Thunderbird | * |
| Mozilla | Firefox | * |
| chainguard | firefox-esr | 0 |
| alpine | firefox-esr | 0 |
| Mozilla | Firefox ESR | * |
Timeline
- Aug 1, 2023 CVE Published
- Aug 2, 2023 EPSS Score (30 in total, the first dated here)
- Dec 18, 2025 CVE Updated
- Mar 21, 2026 Distribution Patch (40 in total, the first dated here)
- Mar 21, 2026 Security Advisory (44 in total, the first dated here)
- Aug 4, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2023-4053
vulnetix vdb fixes CVE-2023-4053Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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