CVE-2026-89261
CVE-2026-89261
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.008 (57.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Weakness classification (CWE)
References
- C05 - POST /search/initElasticSearchIndex proof of concept (exploit)
- C06 - POST /search/deleteElasticSearchByUids proof of concept (exploit)
- C07 - POST /search/deleteElasticSearchByUid proof of concept (exploit)
- C11 - POST /search/addElasticSearchIndexByUid proof of concept (exploit)
- ElasticSearchRestApi index management endpoints carry no authentication check (technical-description)
- mogu_search WebSecurityConfig permits /search/** for all callers (technical-description)
- MoguBlog releases (release-notes)
- Product (product)
- VulnCheck Advisory: MoguBlog through 6.2 Missing Authentication for Elasticsearch Index Management Endpoints (third-party-advisory)
Frequently asked questions
- What is CVE-2026-89261?
- CVE-2026-89261 is a medium-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-09-11.
- How severe is CVE-2026-89261?
- Medium severity. CVSS v3 base score is 6.5 out of 10.