CVE-2026-93453

SOGo before 5.12.11 Password Reset Token Interception via Origin Header

HIGH
8.3
CVSS Score
Published: September 17, 2026 at 11:25 PM UTC
Updated: September 22, 2026 at 09:01 PM UTC
1 product affected across 1 vendorSOGo

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Severity
HIGH8.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.12.11
Affected range stops below 5.12.11, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-640

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