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CVE-2026-90941— novel-plus through 5.3.3 Missing Authorization on the Admin Book Download Endpoint

Quick assessment

Affected
201206030 novel-plus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

xxyopen novel-plus是xxyopen个人开发者开源的一个原创文学CMS系统。 xxyopen novel-plus 5.3.3及之前版本存在授权问题漏洞，该漏洞源于BookController下载端点授权不当，攻击者可通过提供bookId和bookName绕过VIP或购买验证及权限检查，导出包含付费章节在内的完整书籍内容。

CVSS 4.3 · Medium EPSS 0.41% · P35

Possible ATT&CK Techniques 2 AI

T1588 · Obtain Capabilities T1079

Affected Version Matrix 1

VendorProduct Version RangeStatus
201206030 novel-plus ≤ 5.3.3 affected
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I. Basic Information for CVE-2026-90941

Vulnerability Information
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Vulnerability Title
novel-plus through 5.3.3 Missing Authorization on the Admin Book Download Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
xxyopen novel-plus 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
xxyopen novel-plus是xxyopen个人开发者开源的一个原创文学CMS系统。 xxyopen novel-plus 5.3.3及之前版本存在授权问题漏洞，该漏洞源于BookController下载端点授权不当，攻击者可通过提供bookId和bookName绕过VIP或购买验证及权限检查，导出包含付费章节在内的完整书籍内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
201206030 novel-plus 0 ~ 5.3.3 -

II. Public POCs for CVE-2026-90941

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III. Intelligence Information for CVE-2026-90941

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Patches & Fixes for CVE-2026-90941 (2)

Vendor Advisories for CVE-2026-90941 (1)

Proof of Concept for CVE-2026-90941 (1)

Vendor Pages for CVE-2026-90941 (1)

Other References for CVE-2026-90941 (1)

Same Patch Batch · 201206030 · 2026-09-14 · 3 CVEs total

CVE-2026-90939 6.5 MEDIUM novel-plus through 5.3.3 Missing Authorization on the Admin /sys/user/list Endpoint
CVE-2026-90940 5.3 MEDIUM novel-plus through 5.3.3 Default Cache Management Password in the Front Portal

IV. Related Vulnerabilities

Same product: novel-plus
Same vendor: 201206030
Same weakness: CWE-862