CVE-2026-51584CWE-287

CVE-2026-51584

Critical · published August 11, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.5
In the wild
Unconfirmed
What it is

An issue in usememos v0.27.1 allows a remote attacker to achieve account takeover via the ssoCredentials branch of the SignIn handler in server/router/api/v1/auth_service.go, because SSO identity is matched only on an attacker-controllable identifier without binding to the IdP's stable subject claim.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00610 · 48.5th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-08-11T18:17Z
References (2)
https://gist.github.com/seiyaibuki0523/33a4c06eb7d10914e5e5152ecd5100ec · [email protected]https://github.com/usememos/memos · [email protected]
EPSS history
Timeline
  • 11 AUG 00:00Z
    An issue in usememos v0.27.1 allows a remote attacker to achieve account takeover via the ssoCredentials branch of the SignIn handler in…
    cvelistv5