- Description
- Memos is a privacy-first, lightweight note-taking service that uses Access Tokens to authenticate application access. When a user changes their password, the existing list of Access Tokens stay valid instead of expiring. If a user finds that their account has been compromised, they can update their password. In versions up to and including 0.18.1, though, the bad actor will still have access to their account because the bad actor's Access Token stays on the list as a valid token. The user will have to manually delete the bad actor's Access Token to secure their account. The list of Access Tokens has a generic Description which makes it hard to pinpoint a bad actor in a list of Access Tokens. A known patched version of Memos isn't available. To improve Memos security, all Access Tokens will need to be revoked when a user changes their password. This removes the session for all the user's devices and prompts the user to log in again. One can treat the old Access Tokens as "invalid" because those Access Tokens were created with the older password.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- memos
CVSS 4.0
- Type
- Secondary
- Base score
- 7.1
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- HIGH
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Severity
- HIGH
- security-advisories@github.com
- CWE-287
- Hype score
- Not currently trending
#VulnerabilityReport #AccessToken High-Severity Memos Flaw (CVE-2024-21635) Allows Hackers to Stay Logged In After Password Change https://t.co/Hes4Dmw4QN
@Komodosec
23 Dec 2025
39 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
A High-severity flaw (CVE-2024-21635) in Memos fails to invalidate Access Tokens upon password change, allowing attackers to maintain access to the knowledge base. Update to v0.25.2. #Memos #SessionHijack #Cybersecurity #SelfHosted https://t.co/Yw2in1jNgw
@the_yellow_fall
17 Nov 2025
50 Impressions
1 Retweet
0 Likes
0 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:usememos:memos:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E1D1EFD1-55BD-42B2-A420-EF7C1F9453CA",
"versionEndIncluding": "0.18.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]