Vulnerability · Published May 3, 2026 · Assigned by VulDB

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

Medium 5.3

In plain English

A medium-severity authorization bypass via user-controlled key in AFFiNE from toeverything. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 75.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
toeverything	AFFiNE	0.26.00.26.10.26.20.26.3

Weakness: CWE-639, CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References

VDB-360871 | toeverything AFFiNE Public Markdown Preview Endpoint :docId allowDocPreview authorization vdb-entry, technical-description
VDB-360871 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #804455 | AFFiNE AFFiNE (https://github.com/toeverything/AFFiNE) 0.26.3 Authorization Bypass third-party-advisory
https://github.com/ngocnn97/security-advisories/blob/main/AFFiNE_BAC_PoC.mp4 exploit