Missing Authentication in MoguBlog Allows Unauthenticated Access to Email Notification Controls
CVE-2026-89263

6.9MEDIUM

Key Information:

Vendor

Moxi624

Status
Mogublog
Vendor
CVE Published:
11 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-89263?

The MoguBlog platform, through version 6.2, contains a critical flaw where it fails to properly authenticate requests made to the /web/comment/closeEmailNotification endpoint. This vulnerability permits unauthenticated attackers to disable email notifications for any user, simply by modifying a specific flag in the Redis cache. Attackers can exploit this weakness to suppress reply notifications without any authorization, putting user account settings at risk.

Affected Version(s)

MoguBlog 0 <= 6.2

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-2026-89263 - Proof of Concept

References

https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit
https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e...
technical-description
https://github.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e...
technical-description

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mingsheng Lin
.