CVE-2022-4851 Improper Handling of Values in usememos/memos
Attackers can exploit improper value handling to access unauthorized files or data in the Memos web application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-4851?
CVE-2022-4851 is a critical path traversal vulnerability in Usememos Memos, published on 29 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Handling of Values in GitHub repository usememos/memos prior to 0.9.1.
Weakness: CWE-229
Which versions are affected by CVE-2022-4851?
3 open source packages ship an affected version, including github.com/usememos/memos. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/usememos/memos Go | All versions | 0.9.1 |
github.com/usememos/memos Go | All versions | 0.9.1 |
github.com/usememos/memos Go | All versions | 0.9.1 |
Products include Usememos Memos.
How do I fix CVE-2022-4851?
Upgrade github.com/usememos/memos to 0.9.1 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2022-4851 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4851 exists.
Other vulnerabilities in Usememos Memos
- CVE-2025-50738 Memos has Cross-Site Scripting (XSS) Vulnerability in Image URLs
- CVE-2025-22952 Memos Server-Side Request Forgery (SSRF)
- CVE-2023-0109 Stored XSS in usememos/memos
- CVE-2023-4696 Improper Access Control in usememos/memos
- CVE-2022-4866 Cross-site Scripting (XSS) - Stored in usememos/memos
Sources
Also known as GHSA-42q2-m54f-jh95, GO-2023-1285.