Auth bypass in 201206030 Novel-Plus
CVE-2026-90941
novel-plus through 5.3.3 contains an authorization bypass vulnerability in the BookController download endpoint that allows authenticated backend accounts to export complete book text including paid chapters. Attackers can supply a bookId and bookName to retrieve all chapter content without VIP or purchase verification, bypassing the permission checks and data-scope limits enforced elsewhere in the admin interface.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/201206030/novel-plus (product)
- github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/n… (technical-description)
- github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/n… (technical-description)
- github.com/201206030/novel-plus/releases/tag/v5.3.3 (release-notes)
- github.com/LinYuanyi1/cve-request-poc/blob/master/novel-plus/poc-09-book-downlo… (exploit)
- www.vulncheck.com/advisories/novel-plus-through-5.3.3-missing-authorization-on-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90941?
- CVE-2026-90941 is a medium-severity vulnerability in 201206030 Novel-Plus, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-14.
- How severe is CVE-2026-90941?
- Medium severity. CVSS v3 base score is 4.3 out of 10.