Incorrect access control in the /api/v1/user endpoint of usememos memos v0.25.2 allows unauthorized attackers to create arbitrary accounts via a crafted request.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-12-08
A lack of file name validation or verification in the Attachment service of usememos memos v0.25.2 allows attackers to execute a path traversal.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-12-08
Incorrect access control in usememos memos v0.25.2 allows attackers with low-level privileges to arbitrarily delete reactions made to other users' Memos.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-12-08
Incorrect access control in usememos memos v0.25.2 allows attackers with low-level privileges to arbitrarily modify or delete attachments made by other users.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-12-08
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.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-11-14
When Memos 0.22 is configured to store objects locally, an attacker can create a file via the CreateResource endpoint containing a path traversal sequence in the name, allowing arbitrary file write on the server.
CVSS Score
4.3
EPSS Score
0.001
Published
2025-09-03
Memos 0.22 is vulnerable to Stored Cross site scripting (XSS) vulnerabilities by the upload attachment and user avatar features. Memos does not verify the content type of the uploaded data and serve it back as is. An authenticated attacker can use this to elevate their privileges when the stored XSS is viewed by an admin.
CVSS Score
5.4
EPSS Score
0.001
Published
2025-09-03
The Memos application, up to version v0.24.3, allows for the embedding of markdown images with arbitrary URLs. When a user views a memo containing such an image, their browser automatically fetches the image URL without explicit user consent or interaction beyond viewing the memo. This can be exploited by an attacker to disclose the viewing user's IP address, browser User-Agent string, and potentially other request-specific information to the attacker-controlled server, leading to information disclosure and user tracking.
CVSS Score
9.8
EPSS Score
0.036
Published
2025-07-29
elestio memos v0.23.0 is vulnerable to Server-Side Request Forgery (SSRF) due to insufficient validation of user-supplied URLs, which can be exploited to perform SSRF attacks.
CVSS Score
9.8
EPSS Score
0.35
Published
2025-02-27
A stored cross-site scripting (XSS) vulnerability was discovered in usememos/memos version 0.9.1. This vulnerability allows an attacker to upload a JavaScript file containing a malicious script and reference it in an HTML file. When the HTML file is accessed, the malicious script is executed. This can lead to the theft of sensitive information, such as login credentials, from users visiting the affected website. The issue has been fixed in version 0.10.0.
CVSS Score
9.8
EPSS Score
0.001
Published
2024-11-15
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