CVE-2024-21635CWE-287

CVE-2024-21635

High · published November 14, 2025

CVSS v3.1
7.5
EPSS
0%
Percentile
22.3
In the wild
Unconfirmed
What it is

⚡ Changing your password might not be enough! The bad actor’s access tokens stick around like an unwelcome guest who just won’t leave – a privacy nightmare for Memos users! 🔥 Think of it like giving someone a key to your house. When you change the locks, if you don’t take back their key, they can still waltz right in whenever they please. Your old keys are still valid, even after you've changed the locks! An attacker can maintain access to your account long after you've updated your password, potentially leading to unauthorized actions, data exposure, or complete takeover of sensitive information. This is particularly dangerous if your account contains private notes or information you assumed was secured. It's the kind of breach that leaves you feeling vulnerable and exposed.

Put simply

Think of it like giving someone a key to your house. When you change the locks, if you don’t take back their key, they can still waltz right in whenever they please. Your old keys are still valid, even after you've changed the locks! CVE-2024-21635 arises from the fact that existing Access Tokens remain valid even after a password change, allowing unauthorized users to continue accessing accounts without detection or immediate revocation of their permissions.

What to do

An attacker can maintain access to your account long after you've updated your password, potentially leading to unauthorized actions, data exposure, or complete takeover of sensitive information. This is particularly dangerous if your account contains private notes or information you assumed was secured. It's the kind of breach that leaves you feeling vulnerable and exposed. To secure your Memos account, revoke all Access Tokens immediately upon changing your password. Additionally, keep an eye out for updates from the Memos team and encourage them to implement this crucial security fix in future releases. Regularly audit your Access Tokens to identify any suspicious activity! You've got this! Implement these changes, and you’ll be one step closer to fortifying your digital fortress! 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00307 · 22.3th percentile
Weakness
CWE-287 · Improper Authentication
Published
2025-11-14T20:15Z
Affected products (1)
ProductVersionsFixed in
usememos/memos≤ 0.18.1—
References (2)
EPSS history
Timeline
  • 14 NOV 14:11Z
    Memos Access Tokens Stay Valid after User Password Change
    cvelistv5