MediumFix available
firefox-esr, thunderbird — security advisory
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.
- Products
- firefox-esr, thunderbird
- Affected versions
- 102.11.0esr-1, 102.12.0esr-1, 102.12.0esr-1~deb10u1, 102.12.0esr-1~deb11u1, 102.12.0esr-1~deb12u1, 102.13.0esr-1~deb10u1, 102.13.0esr-1~deb11u1, 1:102.11.0-1, 1:102.12.0-1, 1:102.12.0-1~deb10u1, 1:102.12.0-1~deb11u1, 1:102.12.0-1~deb12u1, 1:102.13.0-1~deb10u1, 1:102.13.0-1~deb11u1
- Fixed versions
- 102.13.0esr-1, 102.13.0esr-1~deb12u1, 1:102.13.0-1, 1:102.13.0-1~deb12u1
- CVEs
- CVE-2023-37207
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:03 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2023-37207
firefox-esr
Fixed versions: 102.13.0esr-1~deb12u1
firefox-esr
Fixed versions: 102.13.0esr-1
firefox-esr
Fixed versions: 102.13.0esr-1
thunderbird
Fixed versions: 1:102.13.0-1~deb12u1
thunderbird
Fixed versions: 1:102.13.0-1
thunderbird
Fixed versions: 1:102.13.0-1
Complete source record
{
"id": "5b8f21f81d675e8f7b384924c1fc02d41df162cd376cf6452a06079c1fef711c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-37207",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-37207",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2023-37207",
"products": [
{
"name": {
"value": "firefox-esr",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "102.13.0esr-1~deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "102.11.0esr-1",
"evidence": "/affected/0/versions"
},
{
"value": "102.12.0esr-1",
"evidence": "/affected/0/versions"
},
{
"value": "102.12.0esr-1~deb10u1",
"evidence": "/affected/0/versions"
},
{
"value": "102.12.0esr-1~deb11u1",
"evidence": "/affected/0/versions"
},
{
"value": "102.12.0esr-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "102.13.0esr-1~deb10u1",
"evidence": "/affected/0/versions"
},
{
"value": "102.13.0esr-1~deb11u1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "firefox-esr",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "102.13.0esr-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "firefox-esr",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "102.13.0esr-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "thunderbird",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:102.13.0-1~deb12u1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "1:102.11.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.12.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.12.0-1~deb10u1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.12.0-1~deb11u1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.12.0-1~deb12u1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.13.0-1~deb10u1",
"evidence": "/affected/3/versions"
},
{
"value": "1:102.13.0-1~deb11u1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "thunderbird",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:102.13.0-1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "thunderbird",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:102.13.0-1",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2023-37207",
"aliases": [
"DEBIAN-CVE-2023-37207"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "102.13.0esr-1~deb12u1"
}
]
}
],
"package": {
"name": "firefox-esr",
"purl": "pkg:deb/debian/firefox-esr?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"102.11.0esr-1",
"102.12.0esr-1",
"102.12.0esr-1~deb10u1",
"102.12.0esr-1~deb11u1",
"102.12.0esr-1~deb12u1",
"102.13.0esr-1~deb10u1",
"102.13.0esr-1~deb11u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "102.13.0esr-1"
}
]
}
],
"package": {
"name": "firefox-esr",
"purl": "pkg:deb/debian/firefox-esr?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "102.13.0esr-1"
}
]
}
],
"package": {
"name": "firefox-esr",
"purl": "pkg:deb/debian/firefox-esr?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:102.13.0-1~deb12u1"
}
]
}
],
"package": {
"name": "thunderbird",
"purl": "pkg:deb/debian/thunderbird?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:102.11.0-1",
"1:102.12.0-1",
"1:102.12.0-1~deb10u1",
"1:102.12.0-1~deb11u1",
"1:102.12.0-1~deb12u1",
"1:102.13.0-1~deb10u1",
"1:102.13.0-1~deb11u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:102.13.0-1"
}
]
}
],
"package": {
"name": "thunderbird",
"purl": "pkg:deb/debian/thunderbird?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:102.13.0-1"
}
]
}
],
"package": {
"name": "thunderbird",
"purl": "pkg:deb/debian/thunderbird?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-37207.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-24T09:47:23.639600130Z",
"provider": "osv",
"upstream": [
"CVE-2023-37207"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-37207"
]
},
"related_cves": [
{
"value": "CVE-2023-37207",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 428936,
"published_at": "2023-07-05T09:15:09.963+00:00"
}