Authentication Bypass in MoguBlog's Elasticsearch Index Management Service
CVE-2026-89261

6.9MEDIUM

Key Information:

Vendor

Moxi624

Status
Mogublog
Vendor
CVE Published:
11 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-89261?

The MoguBlog platform, specifically versions up to 6.2, exposes critical Elasticsearch index management endpoints via the mogu_search service without any authentication checks. This oversight allows remote attackers to manipulate the blog's search index in harmful ways, such as deleting entire search indices, altering their contents, or injecting malicious entries. By exploiting these unsecured endpoints, attackers can disrupt the functionality of blog search features, potentially leading to incorrect search results or complete unavailability of search capabilities.

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-2026-89261 - Proof of Concept

CVE-2026-89261 - Proof of Concept

CVE-2026-89261 - Proof of Concept

References

https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit
https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit
https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
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
.