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CVE-2026-89261

6.5 · MEDIUM

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.

Published Sep 11, 2026CWE-306EPSS 0.83%

Overview

CVE-2026-89261 is a medium-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgitee.com/moxi159753/mogu_blog_v2/releasesGitHubgithub.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C05_search_initElasticSearchIndex.pyGitHubgithub.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C06_search_deleteElasticSearchByUids.pyGitHubgithub.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C07_search_deleteElasticSearchByUid.pyGitHubgithub.com/LinYuanyi1/cve-request-poc/blob/master/mogublog-poc/C11_search_addElasticSearchIndexByUid.pyGitHubgithub.com/moxi624/mogu_blog_v2GitHubgithub.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_search/src/main/java/com/moxi/mogublog/search/config/WebSecurityConfig.javaGitHubgithub.com/moxi624/mogu_blog_v2/blob/025d78c7ac7e19b1abf796fa3cc158d855723d15/mogu_search/src/main/java/com/moxi/mogublog/search/restapi/ElasticSearchRestApi.javaRefwww.vulncheck.com/advisories/mogublog-through-6.2-missing-authentication-for-elasticsearch-index-management-endpoints

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89261?

CVE-2026-89261 is a medium-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-89261?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-89261?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-89261?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89261 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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