CVE-2026-84203— Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change
Quick assessment
Affected
usememos memos
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Memos是Memos组织的一款轻量级的个人笔记与知识管理工具。 Memos 0.26.0版本至0.30.0版本存在会话机制问题漏洞，该漏洞源于用户更改密码时未撤销刷新令牌，可能导致攻击者利用窃取的刷新令牌调用RefreshToken RPC获取新的访问令牌并无限轮换，绕过密码更改安全措施，维持账户访问。
Possible ATT&CK Techniques 2 AI
T1092 · Communication Through Removable Media T1040 · Network Sniffing
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I. Basic Information for CVE-2026-84203
Vulnerability Information
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Vulnerability Title
Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Memos 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Memos是Memos组织的一款轻量级的个人笔记与知识管理工具。 Memos 0.26.0版本至0.30.0版本存在会话机制问题漏洞，该漏洞源于用户更改密码时未撤销刷新令牌，可能导致攻击者利用窃取的刷新令牌调用RefreshToken RPC获取新的访问令牌并无限轮换，绕过密码更改安全措施，维持账户访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-84203
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Patches & Fixes for CVE-2026-84203 (2)
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🔗 memos/server/auth/authenticator.go at v0.30.0 · usememos/memos · GitHub technical-description
Vendor Advisories for CVE-2026-84203 (1)
Other References for CVE-2026-84203 (1)
IV. Related Vulnerabilities
Same product: memos
-
CVE-2026-113601
Memos before 0.27.0 Missing Authorization via ActivityServic -
CVE-2026-82476
Memos through 0.30.0 SSRF via Omitted CGNAT Address Range -
CVE-2026-75110
MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRE -
CVE-2026-71271
Memos Webhook SSRF via 0.0.0.0 Reserved-IP Bypass -
CVE-2026-71272
Memos Webhook DNS Rebinding TOCTOU SSRF in safeDialContext()
Same vendor: usememos
-
CVE-2026-113601
Memos before 0.27.0 Missing Authorization via ActivityServic -
CVE-2026-82476
Memos through 0.30.0 SSRF via Omitted CGNAT Address Range -
CVE-2026-71271
Memos Webhook SSRF via 0.0.0.0 Reserved-IP Bypass -
CVE-2026-71272
Memos Webhook DNS Rebinding TOCTOU SSRF in safeDialContext() -
CVE-2026-6634
usememos UpdateInstanceSetting App.tsx memos_access_token im
Same weakness: CWE-613
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CVE-2025-36252
TS4500 Tape Library Insufficient Session Expiration -
CVE-2025-13173
Improper Token Revocation via Session-Bound Token Flow in Mu -
CVE-2026-12254
Netskope Client Captive Portal WebView Persistence allowing -
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Apache Answer: Stale Visit Tokens Retain Access to Private U
V. Comments for CVE-2026-84203
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