Vulnerability record · CVE-2026-59262 · published 8 July 2026

CVE-2026-59262: Missing authorization vulnerability

AFFiNE's histories GraphQL field fails to validate Doc.Read permission before exposing document edit history, allowing authenticated workspace members to retrieve restricted content timelines. Attackers can supply arbitrary document GUIDs to access full edit histories including user names, emails, and timestamps of private pages they lack access to.

7.1 CVSS 4.0 High EPSS 0.42% · top 66.7% CWE-862 · Missing authorization Deferred

7.1CVSS 4.0 base score

0.42%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

5References

17 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/toeverything/AFFiNE
https://github.com/toeverything/AFFiNE/commit/1f0bcd01a37a522393fc1b288395e3a72a79ccad
https://github.com/toeverything/AFFiNE/issues/15179
https://www.vulncheck.com/advisories/affine-unauthorized-document-edit-history-access-via-graphql-histories-field
https://github.com/toeverything/AFFiNE/issues/15179

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Source: NIST National Vulnerability Database (record CVE-2026-59262), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.