It was discovered that SOGo used the client-supplied Origin header when constructing password reset links. A remote attacker could possibly use this issue to obtain password reset tokens and take over user accounts.
{
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "sogo",
"binary_version": "5.12.4-1.2ubuntu0.1~esm2"
},
{
"binary_name": "sogo-activesync",
"binary_version": "5.12.4-1.2ubuntu0.1~esm2"
},
{
"binary_name": "sogo-common",
"binary_version": "5.12.4-1.2ubuntu0.1~esm2"
}
]
}
{
"cves": [
{
"id": "CVE-2026-93453",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:26.04:LTS"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8993-1.json"