CVE-2022-4802 Authorization Bypass Through User-Controlled Key in usememos/memos
Attackers can bypass authorization controls in the Memos web application to access unauthorized data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-4802?
CVE-2022-4802 is a critical authentication bypass vulnerability in Usememos Memos, published on 28 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key in GitHub repository usememos/memos prior to 0.9.1.
Weakness: CWE-639
Which versions are affected by CVE-2022-4802?
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-2022-4802?
Upgrade github.com/usememos/memos to 0.9.1 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-4802 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4802 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-rx2m-xr4x-54hh, GO-2022-1248.