Vulnerability in Alinto Sogo
CVE-2026-93453
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: -0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.sogo.nu/news/2026/sogo-v51211-released.html (vendor-advisory)
- github.com/Alinto/sogo/commit/382118a93b6925de2ce7f774abc1865ebea2dbba (patch)
- github.com/Alinto/sogo/commit/04a3e9823889acaf6c247b224f5f7a0108f8f829 (patch)
- github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m (technical-description)
- github.com/Alinto/sogo (product)
- www.vulncheck.com/advisories/sogo-before-5.12.11-password-reset-token-intercept… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93453?
- CVE-2026-93453 is a high-severity vulnerability in Alinto Sogo, classified under Weak Password Recovery Mechanism for Forgotten Password. CVSS score: 8.3/10. Published 2026-09-18.
- How severe is CVE-2026-93453?
- High severity. CVSS v3 base score is 8.3 out of 10.
- Is CVE-2026-93453 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.