CVE-2026-89263
CVE-2026-89263
MoguBlog through 6.2 fails to authenticate requests to the /web/comment/closeEmailNotification endpoint, allowing unauthenticated attackers to disable email notifications for arbitrary users. Remote callers can modify the startEmailNotification flag in Redis cache for any user identifier to suppress reply notifications without authorization.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Weakness classification (CWE)
References
- C08 - GET /web/comment/closeEmailNotification/{userUid} proof of concept (exploit)
- CommentRestApi.bindUserEmail takes the target user from the path with no authorization check (technical-description)
- mogu_web WebSecurityConfig permits /web/comment/** for all callers (technical-description)
- MoguBlog releases (release-notes)
- Product (product)
- VulnCheck Advisory: MoguBlog through 6.2 Missing Authentication on the Comment Email-Notification Endpoint (third-party-advisory)
Frequently asked questions
- What is CVE-2026-89263?
- CVE-2026-89263 is a medium-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-09-11.
- How severe is CVE-2026-89263?
- Medium severity. CVSS v3 base score is 5.3 out of 10.