CVE-2022-4866 Cross-site Scripting (XSS) - Stored in usememos/memos
Attackers can inject malicious scripts into memos, potentially stealing user sessions or executing code in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-4866?
CVE-2022-4866 is a critical cross-site scripting vulnerability in Usememos Memos, published on 31 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cross-site Scripting (XSS) - Stored in GitHub repository usememos/memos prior to 0.9.1.
Weakness: CWE-79
Which versions are affected by CVE-2022-4866?
2 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 |
Products include Usememos Memos.
How do I fix CVE-2022-4866?
Upgrade github.com/usememos/memos to 0.9.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2022-4866 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4866 exists.
Other vulnerabilities in Usememos Memos
Sources
Also known as GHSA-x9p9-v3x6-68mq.