CriticalFix available
roundcube — security advisory
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
- Products
- roundcube
- Affected versions
- 1.6.1+dfsg-1, 1.6.11+dfsg-1, 1.6.12+dfsg-0+deb13u1, 1.6.12+dfsg-1, 1.6.13+dfsg-0+deb13u1, 1.6.13+dfsg-1, 1.6.14+dfsg-1, 1.6.15+dfsg-0+deb13u1, 1.6.15+dfsg-1, 1.6.16+dfsg-0+deb13u1, 1.6.16+dfsg-1, 1.6.2+dfsg-1, 1.6.3+dfsg-1, 1.6.3+dfsg-1~deb12u1, 1.6.3+dfsg-2, 1.6.4+dfsg-1, 1.6.4+dfsg-1~deb12u1, 1.6.5+dfsg-1, 1.6.5+dfsg-1+deb12u2, 1.6.5+dfsg-1+deb12u3, 1.6.5+dfsg-1+deb12u4, 1.6.5+dfsg-1+deb12u5, 1.6.5+dfsg-1+deb12u6, 1.6.5+dfsg-1+deb12u7, 1.6.5+dfsg-1+deb12u8, 1.6.5+dfsg-1+deb12u9, 1.6.5+dfsg-1~deb12u1
- Fixed versions
- 1.6.17+dfsg-0+deb13u1, 1.6.17+dfsg-1, 1.6.5+dfsg-1+deb12u10
- CVEs
- CVE-2026-62643
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:52 UTC · Revision 2
Source evidence
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
osv:DEBIAN-CVE-2026-62643
roundcube
Fixed versions: 1.6.5+dfsg-1+deb12u10
roundcube
Fixed versions: 1.6.17+dfsg-0+deb13u1
roundcube
Fixed versions: 1.6.17+dfsg-1
Complete source record
{
"id": "21f8f13aadaac4b8375f0845f4158a17569f51a013feffd7e7126eab3a8bd813",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-62643",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-62643",
"summary": "In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.",
"evidence": "osv:DEBIAN-CVE-2026-62643",
"products": [
{
"name": {
"value": "roundcube",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.6.5+dfsg-1+deb12u10",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.6.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.3+dfsg-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.3+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.4+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.4+dfsg-1~deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u4",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u5",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u6",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u7",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u8",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1+deb12u9",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5+dfsg-1~deb12u1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.6.17+dfsg-0+deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.6.11+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.12+dfsg-0+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.12+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.13+dfsg-0+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.13+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.14+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.15+dfsg-0+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.15+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.16+dfsg-0+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.16+dfsg-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.6.17+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.6.11+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.12+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.13+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.14+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.15+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.16+dfsg-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2026-62643",
"aliases": [
"DEBIAN-CVE-2026-62643"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.5+dfsg-1+deb12u10"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/debian/roundcube?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.6.1+dfsg-1",
"1.6.2+dfsg-1",
"1.6.3+dfsg-1",
"1.6.3+dfsg-1~deb12u1",
"1.6.3+dfsg-2",
"1.6.4+dfsg-1",
"1.6.4+dfsg-1~deb12u1",
"1.6.5+dfsg-1",
"1.6.5+dfsg-1+deb12u2",
"1.6.5+dfsg-1+deb12u3",
"1.6.5+dfsg-1+deb12u4",
"1.6.5+dfsg-1+deb12u5",
"1.6.5+dfsg-1+deb12u6",
"1.6.5+dfsg-1+deb12u7",
"1.6.5+dfsg-1+deb12u8",
"1.6.5+dfsg-1+deb12u9",
"1.6.5+dfsg-1~deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62643.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.17+dfsg-0+deb13u1"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/debian/roundcube?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.6.11+dfsg-1",
"1.6.12+dfsg-0+deb13u1",
"1.6.12+dfsg-1",
"1.6.13+dfsg-0+deb13u1",
"1.6.13+dfsg-1",
"1.6.14+dfsg-1",
"1.6.15+dfsg-0+deb13u1",
"1.6.15+dfsg-1",
"1.6.16+dfsg-0+deb13u1",
"1.6.16+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62643.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.17+dfsg-1"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/debian/roundcube?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.6.11+dfsg-1",
"1.6.12+dfsg-1",
"1.6.13+dfsg-1",
"1.6.14+dfsg-1",
"1.6.15+dfsg-1",
"1.6.16+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62643.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:27.676312384Z",
"provider": "osv",
"upstream": [
"CVE-2026-62643"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-62643"
]
},
"related_cves": [
{
"value": "CVE-2026-62643",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445154,
"published_at": "2026-07-14T16:17:04.67+00:00"
}