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CVE-2026-88898— AppFlowy-Cloud 0.7.2 through 0.9.64 Missing Workspace Authorization on Bulk Publish Endpoint

Quick assessment

Affected
AppFlowy-IO AppFlowy-Cloud
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.

AppFlowy-Cloud 0.7.2 至 0.9.64 版本在“批量发布”（bulk publish）端点的路径处理中，未能正确验证调用者与目标工作区（workspace）的授权关系。这使得已认证用户能够将内容发布到其他租户（tenant）的命名空间中。攻击者可以利用这一缺陷，在受害者的工作区中写入由攻击者控制的标题、正文和元数据所构成的已发布视图，从而篡改公开页面内容，或在受信任的 URL 上托管钓鱼内容。

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-88898

Vulnerability Information
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Vulnerability Title
AppFlowy-Cloud 0.7.2 through 0.9.64 Missing Workspace Authorization on Bulk Publish Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
AppFlowy-Cloud versions 0.7.2 through 0.9.64 fail to authorize callers against the workspace in the bulk publish endpoint path, allowing authenticated users to publish content into other tenants' namespaces. Attackers can write published views with attacker-controlled title, body and metadata into victim workspaces to deface public pages or host phishing content on trusted URLs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AppFlowy-IO AppFlowy-Cloud 0.7.2 ~ 0.9.64 -

II. Public POCs for CVE-2026-88898

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III. Intelligence Information for CVE-2026-88898

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Vendor Advisories for CVE-2026-88898 (1)

Proof of Concept for CVE-2026-88898 (1)

Vendor Pages for CVE-2026-88898 (2)

IV. Related Vulnerabilities

Same product: AppFlowy-Cloud
Same vendor: AppFlowy-IO
Same weakness: CWE-862

V. Comments for CVE-2026-88898

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