High severity · published Sep 17, 2026
CVE-2026-93453
SOGo before 5.12.11 Password Reset Token Interception via Origin Header
8.3
CVSS
0.5%
EPSS
No
On KEV
Description
SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid password-reset tokens mailed to victim recovery addresses within links pointing to attacker infrastructure, enabling account takeover.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SO
SOGo · Alinto
before 5.12.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93453
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-93453
github.com
https://github.com/Alinto/sogo
github.com
https://github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m#L1375
github.com
https://github.com/Alinto/sogo/commit/04a3e9823889acaf6c247b224f5f7a0108f8f829
github.com
https://github.com/Alinto/sogo/commit/382118a93b6925de2ce7f774abc1865ebea2dbba
www.sogo.nu
https://www.sogo.nu/news/2026/sogo-v51211-released.html
www.vulncheck.com
https://www.vulncheck.com/advisories/sogo-before-5.12.11-password-reset-token-interception-via-origin-header
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