What’s Vulnerable › Vulnerabilities

CVE-2026-51584

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-08-31
• Weakness: CWE-287

Description

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.

References

• https://gist.github.com/seiyaibuki0523/33a4c06eb7d10914e5e5152ecd5100ec
• https://github.com/usememos/memos

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