CVE-2026-89261 MoguBlog through 6.2 Missing Authentication for Elasticsearch Index Management Endpoints
Remote attackers can delete or alter the blog search index via unauthenticated Elasticsearch endpoints, disrupting search functionality.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89261?
CVE-2026-89261 is a medium-severity missing authorization vulnerability in moxi624 MoguBlog, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MoguBlog through 6.2 exposes Elasticsearch index management endpoints in the mogu_search service without authentication, allowing remote attackers to delete, recreate, or alter the blog search index. Attackers can invoke POST endpoints to wipe the entire search index, delete specific documents, or inject malicious index entries, causing search functionality to return incorrect or no results.
Weakness: CWE-306
Which versions are affected by CVE-2026-89261?
How do I fix CVE-2026-89261?
No fix has been published for CVE-2026-89261 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-89261 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-89261 exists.
Sources
Also known as GHSA-4j85-4728-jr5q.