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 0.26.0 至 0.30.0 版本在用户更改密码时未能撤销刷新令牌（refresh token），导致攻击者能够维持对账户的访问权限。如果攻击者窃取了刷新令牌，他们可以调用 RPC 接口获取新的访问令牌，并无限期地轮换刷新令牌，从而绕过通过修改密码来提升安全性的机制。
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
Affected Products
II. Public POCs for CVE-2026-84203
| # | POC Description | Source Link | Shenlong Link |
|---|
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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
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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() -
CVE-2026-6634
usememos UpdateInstanceSetting App.tsx memos_access_token im
Same vendor: usememos
-
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 -
CVE-2024-21635
Memos Access Tokens Stay Valid after User Password Change
Same weakness: CWE-613
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CVE-2026-84480
WWBN AVideo Password Recovery Token Expiration Bypass -
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QuantumNous new-api Revoked API Token token session expirati -
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Rodauth before 2.47.0 Authentication Bypass via jwt_refresh -
CVE-2026-81826
Flowintel Fails to Invalidate Active Sessions After Password -
CVE-2025-62342
HCL IntelliOps Event Management is affected by multiple secu
V. Comments for CVE-2026-84203
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