Medium
Security advisory
Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-26079
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 08:45 UTC · Revision 1
Source evidence
Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.
osv:CVE-2026-26079
Complete source record
{
"id": "dfd69c26692ab693854fa52c59c10b046f3693e716159cdd7a114c985d5acc0f",
"url": "https://osv.dev/vulnerability/CVE-2026-26079",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-26079",
"summary": "Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.",
"evidence": "osv:CVE-2026-26079",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-26079",
"aliases": [
"CVE-2026-26079"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/roundcube/roundcubemail",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c15f5dbf093a497e19a749b20e7f8fb5a9c24cde"
},
{
"introduced": "993b888afe29c383bf45c84f17090f4db96367ba"
},
{
"fixed": "53d75d5dfebef235a344d476b900c20c12d52b01"
},
{
"fixed": "1f4c3a5af5033747f9685a8a395dbd8228d19816"
},
{
"fixed": "2b5625f1d2ef7e050fd1ae481b2a52dc35466447"
},
{
"fixed": "bf89cbaa5897d8ad62e8057d9a3f6babb90b7954"
},
{
"fixed": "5a3315cce587e0be58335d11ff9a5571c90494a5"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.5.13"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.6.0"
},
{
"fixed": "1.6.13"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "53d75d5dfebef235a344d476b900c20c12d52b01"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.6.13"
},
{
"range": [
{
"fixed": "1f4c3a5af5033747f9685a8a395dbd8228d19816"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "2b5625f1d2ef7e050fd1ae481b2a52dc35466447"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "53d75d5dfebef235a344d476b900c20c12d52b01"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "c15f5dbf093a497e19a749b20e7f8fb5a9c24cde"
}
],
"source": "REFERENCES_TAG",
"original_tag": "1.5.13"
},
{
"range": [
{
"fixed": "bf89cbaa5897d8ad62e8057d9a3f6babb90b7954"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "5a3315cce587e0be58335d11ff9a5571c90494a5"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "c15f5dbf093a497e19a749b20e7f8fb5a9c24cde"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"1.5.12",
"1.6.12",
"1.5.11",
"1.5.10",
"1.6.11",
"1.6.10",
"1.5.9",
"1.6.9",
"1.5.8",
"1.6.8",
"1.5.7",
"1.6.7",
"1.6.6",
"1.5.6",
"1.6.5",
"1.5.5",
"1.6.4",
"1.6.3",
"1.5.4",
"1.6.2",
"1.6.1",
"1.5.3",
"1.6.0",
"1.5.2",
"1.5.1",
"1.5.0",
"1.5-rc",
"1.5-beta",
"1.4-rc2",
"1.4-rc1",
"1.4-beta",
"1.3-beta",
"1.2-rc",
"1.2-beta",
"1.1.0",
"1.1-rc",
"1.1-beta",
"v0.1-beta2"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26079.json"
}
}
],
"modified": "2026-10-28T02:30:50.269649221Z",
"provider": "osv",
"references": [
"https://github.com/roundcube/roundcubemail/releases/tag/1.5.13",
"https://github.com/roundcube/roundcubemail/releases/tag/1.6.13",
"https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26079.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-26079",
"https://github.com/roundcube/roundcubemail/commit/1f4c3a5af5033747f9685a8a395dbd8228d19816",
"https://github.com/roundcube/roundcubemail/commit/2b5625f1d2ef7e050fd1ae481b2a52dc35466447",
"https://github.com/roundcube/roundcubemail/commit/53d75d5dfebef235a344d476b900c20c12d52b01",
"https://github.com/roundcube/roundcubemail/commit/5a3315cce587e0be58335d11ff9a5571c90494a5",
"https://github.com/roundcube/roundcubemail/commit/bf89cbaa5897d8ad62e8057d9a3f6babb90b7954",
"https://github.com/roundcube/roundcubemail/commit/c15f5dbf093a497e19a749b20e7f8fb5a9c24cde"
],
"provider_metadata": {
"cwe_ids": [
"CWE-829"
],
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26079.json"
}
},
"related_cves": [
{
"value": "CVE-2026-26079",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518785,
"published_at": "2026-02-11T04:27:24.156+00:00"
}