Critical
roundcube — security advisory
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).
- Products
- roundcube
- Affected versions
- 1.1.1+dfsg.1-2, 1.1.2+dfsg.1-5, 1.1.3+dfsg.1-1, 1.1.4+dfsg.1-1, 1.2~beta+dfsg.1-0ubuntu1, 1.2~beta+dfsg.1-0ubuntu1+esm1, 1.2~beta+dfsg.1-0ubuntu1+esm2, 1.2~beta+dfsg.1-0ubuntu1+esm3, 1.2~beta+dfsg.1-0ubuntu1+esm4, 1.2~beta+dfsg.1-0ubuntu1+esm5, 1.2~beta+dfsg.1-0ubuntu1+esm6, 1.2~beta+dfsg.1-0ubuntu1+esm7, 1.2~beta+dfsg.1-0ubuntu1+esm8, 1.3.0+dfsg.1-1, 1.3.1+dfsg.1-1, 1.3.10+dfsg.1-1, 1.3.3+dfsg.1-1, 1.3.3+dfsg.1-2, 1.3.6+dfsg.1-1, 1.3.6+dfsg.1-1ubuntu0.1~esm1, 1.3.6+dfsg.1-1ubuntu0.1~esm2, 1.3.6+dfsg.1-1ubuntu0.1~esm3, 1.3.6+dfsg.1-1ubuntu0.1~esm4, 1.3.6+dfsg.1-1ubuntu0.1~esm5, 1.3.6+dfsg.1-1ubuntu0.1~esm6, 1.3.6+dfsg.1-1ubuntu0.1~esm7, 1.3.6+dfsg.1-1ubuntu0.1~esm8, 1.3.8+dfsg.1-2, 1.4.1+dfsg.1-2, 1.4.11+dfsg.1-4, 1.4.2+dfsg.1-1, 1.4.2+dfsg.1-2, 1.4.3+dfsg.1-1, 1.4.3+dfsg.1-1ubuntu0.1~esm1, 1.4.3+dfsg.1-1ubuntu0.1~esm2, 1.4.3+dfsg.1-1ubuntu0.1~esm3, 1.4.3+dfsg.1-1ubuntu0.1~esm4, 1.4.3+dfsg.1-1ubuntu0.1~esm5, 1.4.3+dfsg.1-1ubuntu0.1~esm6, 1.4.3+dfsg.1-1ubuntu0.1~esm7, 1.4.3+dfsg.1-1ubuntu0.1~esm8, 1.5.0+dfsg.1-2, 1.5.0+dfsg.1-2ubuntu0.1~esm1, 1.5.0+dfsg.1-2ubuntu0.1~esm2, 1.5.0+dfsg.1-2ubuntu0.1~esm3, 1.5.0+dfsg.1-2ubuntu0.1~esm4, 1.5.0+dfsg.1-2ubuntu0.1~esm5, 1.5.0+dfsg.1-2ubuntu0.1~esm6, 1.6.10+dfsg-1, 1.6.10+dfsg-2, 1.6.11+dfsg-1, 1.6.11+dfsg-1ubuntu0.26.04.1~esm1, 1.6.2+dfsg-1, 1.6.4+dfsg-1, 1.6.5+dfsg-1, 1.6.6+dfsg-1, 1.6.6+dfsg-2, 1.6.6+dfsg-2ubuntu0.1, 1.6.6+dfsg-2ubuntu0.1+esm1, 1.6.6+dfsg-2ubuntu0.1+esm2, 1.6.6+dfsg-2ubuntu0.1+esm3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54433
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:45 UTC · Revision 1
Source evidence
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).
osv:UBUNTU-CVE-2026-54433
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
roundcube
Fixed versions: Not specified
Complete source record
{
"id": "d8ebc8c994e900d55ab9d02f22fcfbeb82548108ba8d78ba20065e223141f997",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-54433",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-54433",
"summary": "In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).",
"evidence": "osv:UBUNTU-CVE-2026-54433",
"products": [
{
"name": {
"value": "roundcube",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.1+dfsg.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.2+dfsg.1-5",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.3+dfsg.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.4+dfsg.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm2",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm3",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm4",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm5",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm6",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm7",
"evidence": "/affected/0/versions"
},
{
"value": "1.2~beta+dfsg.1-0ubuntu1+esm8",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.0+dfsg.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.1+dfsg.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.3+dfsg.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.3+dfsg.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm2",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm3",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm4",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm5",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm6",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm7",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.6+dfsg.1-1ubuntu0.1~esm8",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.8+dfsg.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.3.10+dfsg.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.1+dfsg.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.2+dfsg.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.2+dfsg.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm1",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm2",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm3",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm4",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm5",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm6",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm7",
"evidence": "/affected/2/versions"
},
{
"value": "1.4.3+dfsg.1-1ubuntu0.1~esm8",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.11+dfsg.1-4",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm1",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm2",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm3",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm4",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm5",
"evidence": "/affected/3/versions"
},
{
"value": "1.5.0+dfsg.1-2ubuntu0.1~esm6",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6.2+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.4+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.5+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-2",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-2ubuntu0.1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-2ubuntu0.1+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-2ubuntu0.1+esm2",
"evidence": "/affected/4/versions"
},
{
"value": "1.6.6+dfsg-2ubuntu0.1+esm3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6.10+dfsg-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.6.10+dfsg-2",
"evidence": "/affected/5/versions"
},
{
"value": "1.6.11+dfsg-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6.11+dfsg-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "roundcube",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6.11+dfsg-1",
"evidence": "/affected/7/versions"
},
{
"value": "1.6.11+dfsg-1ubuntu0.26.04.1~esm1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-54433",
"aliases": [
"UBUNTU-CVE-2026-54433"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/ubuntu/roundcube?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1.1.1+dfsg.1-2",
"1.1.2+dfsg.1-5",
"1.1.3+dfsg.1-1",
"1.1.4+dfsg.1-1",
"1.2~beta+dfsg.1-0ubuntu1",
"1.2~beta+dfsg.1-0ubuntu1+esm1",
"1.2~beta+dfsg.1-0ubuntu1+esm2",
"1.2~beta+dfsg.1-0ubuntu1+esm3",
"1.2~beta+dfsg.1-0ubuntu1+esm4",
"1.2~beta+dfsg.1-0ubuntu1+esm5",
"1.2~beta+dfsg.1-0ubuntu1+esm6",
"1.2~beta+dfsg.1-0ubuntu1+esm7",
"1.2~beta+dfsg.1-0ubuntu1+esm8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "roundcube",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
},
{
"binary_name": "roundcube-core",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
},
{
"binary_name": "roundcube-mysql",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
},
{
"binary_name": "roundcube-pgsql",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
},
{
"binary_name": "roundcube-plugins",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
},
{
"binary_name": "roundcube-sqlite3",
"binary_version": "1.2~beta+dfsg.1-0ubuntu1+esm8"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/ubuntu/roundcube?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"1.3.0+dfsg.1-1",
"1.3.1+dfsg.1-1",
"1.3.3+dfsg.1-1",
"1.3.3+dfsg.1-2",
"1.3.6+dfsg.1-1",
"1.3.6+dfsg.1-1ubuntu0.1~esm1",
"1.3.6+dfsg.1-1ubuntu0.1~esm2",
"1.3.6+dfsg.1-1ubuntu0.1~esm3",
"1.3.6+dfsg.1-1ubuntu0.1~esm4",
"1.3.6+dfsg.1-1ubuntu0.1~esm5",
"1.3.6+dfsg.1-1ubuntu0.1~esm6",
"1.3.6+dfsg.1-1ubuntu0.1~esm7",
"1.3.6+dfsg.1-1ubuntu0.1~esm8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "roundcube",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-core",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-mysql",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-pgsql",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-plugins",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-sqlite3",
"binary_version": "1.3.6+dfsg.1-1ubuntu0.1~esm8"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/ubuntu/roundcube?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1.3.8+dfsg.1-2",
"1.3.10+dfsg.1-1",
"1.4.1+dfsg.1-2",
"1.4.2+dfsg.1-1",
"1.4.2+dfsg.1-2",
"1.4.3+dfsg.1-1",
"1.4.3+dfsg.1-1ubuntu0.1~esm1",
"1.4.3+dfsg.1-1ubuntu0.1~esm2",
"1.4.3+dfsg.1-1ubuntu0.1~esm3",
"1.4.3+dfsg.1-1ubuntu0.1~esm4",
"1.4.3+dfsg.1-1ubuntu0.1~esm5",
"1.4.3+dfsg.1-1ubuntu0.1~esm6",
"1.4.3+dfsg.1-1ubuntu0.1~esm7",
"1.4.3+dfsg.1-1ubuntu0.1~esm8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "roundcube",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-core",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-mysql",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-pgsql",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-plugins",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
},
{
"binary_name": "roundcube-sqlite3",
"binary_version": "1.4.3+dfsg.1-1ubuntu0.1~esm8"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "roundcube",
"purl": "pkg:deb/ubuntu/roundcube?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"1.4.11+dfsg.1-4",
"1.5.0+dfsg.1-2",
"1.5.0+dfsg.1-2ubuntu0.1~esm1",
"1.5.0+dfsg.1-2ubuntu0.1~esm2",
"1.5.0+dfsg.1-2ubuntu0.1~esm3",
"1.5.0+dfsg.1-2ubuntu0.1~esm4",
"1.5.0+dfsg.1-2ubuntu0.1~esm5",
"1.5.0+dfsg.1-2ubuntu0.1~esm6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "roundcube",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
},
{
"binary_name": "roundcube-core",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
},
{
"binary_name": "roundcube-mysql",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
},
{
"binary_name": "roundcube-pgsql",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
},
{
"binary_name": "roundcube-plugins",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
},
{
"binary_name": "roundcube-sqlite3",
"binary_version": "1.5.0+dfsg.1-2ubuntu0.1~esm6"
}
]
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},
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]
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}
],
"modified": "2026-10-17T12:59:06.182867070Z",
"provider": "osv",
"upstream": [
"CVE-2026-54433"
],
"references": [
"https://ubuntu.com/security/CVE-2026-54433",
"https://www.cve.org/CVERecord?id=CVE-2026-54433",
"https://github.com/roundcube/roundcubemail/commit/63e42e233c6e8b5100e2e61a4d13addcd1a45bd5"
]
},
"related_cves": [
{
"value": "CVE-2026-54433",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359293,
"published_at": "2026-07-14T17:17:00+00:00"
}