Vulnerability · Published Sep 1, 2026 · Assigned by VulnCheck
CVE-2026-84203Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change
High 8.1
In plain English
A high-severity security flaw in memos from usememos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 60.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Memos versions 0.26.0 through 0.30.0 fail to revoke refresh tokens when a user changes their password, allowing attackers to maintain account access. An attacker with a stolen refresh token can call the RefreshToken RPC to obtain new access tokens and rotate the refresh token indefinitely, bypassing the password change security measure.
Affected products (as reported)
Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/usememos/memos product
- https://github.com/usememos/memos/blob/v0.30.0/server/router/api/v1/user_service.go technical-description
- https://github.com/usememos/memos/blob/v0.30.0/server/auth/authenticator.go technical-description
- VulnCheck Advisory: Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change third-party-advisory