Password Reset Vulnerability in SOGo Email Server by Alinto
CVE-2026-93453

8.7HIGH

Key Information:

Vendor

Alinto

Status
Sogo
Vendor
CVE Published:
17 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-93453?

The SOGo email server prior to version 5.12.11 contains a significant vulnerability that allows unauthorized attackers to exploit the password-reset process. By injecting a malicious Origin header when submitting password recovery requests, attackers can redirect valid password-reset tokens to their own domains. This flaw enables the potential for account takeover as attackers can gain access to victims' accounts via recovery links pointing to attacker-controlled sites, posing serious risks to user security.

Affected Version(s)

SOGo 0 < 5.12.11

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-93453
Created by Faceless0x7

References

https://www.sogo.nu/news/2026/sogo-v51211-released.html
vendor-advisory
https://github.com/Alinto/sogo/commit/382118a93b6925de2ce...
patch
https://github.com/Alinto/sogo/commit/04a3e9823889acaf6c2...
patch

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Faceless0x7
.