An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment.
{
"cna_assigner": "mitre",
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35539.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.5.14"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.6.0"
},
{
"fixed": "1.6.14"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "10a6d1fa8acac85c727b0a6ae4a6642bfa27bea1"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "1b30edf5369668c92fe91dae3d52e477c808aa4f"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "d742954ccbcdee7020f8f2e7c49ce0fca5a0efab"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "1.5.14",
"range": [
{
"fixed": "d742954ccbcdee7020f8f2e7c49ce0fca5a0efab"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "1.6.14",
"range": [
{
"fixed": "27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "1.7-rc5",
"range": [
{
"fixed": "8e4a99b0746577c2928f5ae984b3ab533b970ca0"
}
],
"source": "REFERENCES_TAG"
}
]
}