CVE-2026-7702: toeverything AFFiNE Public Markdown Preview Endpoint :docId allowDocPreview authorization

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-03 · updated 2026-10-26
Weakness: CWE-285

Description

A vulnerability was detected in toeverything AFFiNE up to 0.26.3. This issue affects the function allowDocPreview of the file /workspace/:workspaceId/:docId of the component Public Markdown Preview Endpoint. The manipulation results in authorization bypass. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

toeverything AFFiNE: 0.26.0, 0.26.1, 0.26.2, 0.26.3

References

https://github.com/ngocnn97/security-advisories/blob/main/AFFiNE_BAC_PoC.mp4
https://vuldb.com/submit/804455
https://vuldb.com/vuln/360871
https://vuldb.com/vuln/360871/cti

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