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CVE-2026-111363— BISHENG through 3.0.0-beta4 IDOR via /api/v1/knowledge/file_bbox

Quick assessment

Affected
dataelement bisheng
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.

BISHENG 在 3.0.0-beta4 及之前版本中存在一个不安全的直接对象引用（IDOR）漏洞。攻击者通过提供任意的 file_id 值，允许已认证的低权限用户读取其他用户已解析的文档。攻击者可以针对 GET /api/v1/knowledge/file_bbox 接口枚举连续的文件 ID，从而获取其他用户和租户知识库中提取的页面文本。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-111363

Vulnerability Information
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Vulnerability Title
BISHENG through 3.0.0-beta4 IDOR via /api/v1/knowledge/file_bbox
Source: CVE Program / CVE List V5
Vulnerability Description
BISHENG through 3.0.0-beta4 contains an insecure direct object reference vulnerability that allows authenticated low-privileged users to read other users' parsed documents by supplying arbitrary file_id values. Attackers can enumerate sequential file ids against GET /api/v1/knowledge/file_bbox to retrieve extracted page text from other users' and tenants' knowledge bases.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
dataelement bisheng 0 ~ 3.0.0-beta4 -

II. Public POCs for CVE-2026-111363

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111363

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Vendor Advisories for CVE-2026-111363 (1)

Security Blog Posts for CVE-2026-111363 (1)

IV. Related Vulnerabilities

Same product: bisheng
Same vendor: dataelement
Same weakness: CWE-639

V. Comments for CVE-2026-111363

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