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CVE-2026-25477— AFFiNE: Open Redirect via Regex Bypass in redirect-proxy

Quick assessment

Affected
toeverything AFFiNE
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.

AFFiNE.Pro是Toeverything开源的一个下一代知识库。 AFFiNE.Pro 0.26.0之前版本存在输入验证错误漏洞，该漏洞源于/redirect-proxy端点的域名验证逻辑存在缺陷，可能导致开放重定向。

AI Predicted 6.1 Difficulty: Easy EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-25477

Vulnerability Information
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Vulnerability Title
AFFiNE: Open Redirect via Regex Bypass in redirect-proxy
Source: CVE Program / CVE List V5
Vulnerability Description
AFFiNE is an open-source, all-in-one workspace and an operating system. Prior to version 0.26.0, there is an Open Redirect vulnerability located at the /redirect-proxy endpoint. The flaw exists in the domain validation logic, where an improperly anchored Regular Expression allows an attacker to bypass the whitelist by using malicious domains that end with a trusted string. This issue has been patched in version 0.26.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
AFFiNE.Pro 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AFFiNE.Pro是Toeverything开源的一个下一代知识库。 AFFiNE.Pro 0.26.0之前版本存在输入验证错误漏洞，该漏洞源于/redirect-proxy端点的域名验证逻辑存在缺陷，可能导致开放重定向。
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
toeverything AFFiNE < 0.26.0 -

II. Public POCs for CVE-2026-25477

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III. Intelligence Information for CVE-2026-25477

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Vendor Advisories for CVE-2026-25477 (1)

IV. Related Vulnerabilities

Same product: AFFiNE
Same vendor: toeverything
Same weakness: CWE-601

V. Comments for CVE-2026-25477

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