#VU70714 Stored cross-site scripting in memos - CVE-2022-4865

Vulnerability identifier: #VU70714

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-4865

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
memos
Web applications / Modules and components for CMS

Vendor: memos

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when creating a new post. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

memos: 0.0.1 - 0.9.0

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External links
https://huntr.dev/bounties/cd8765a2-bf28-4019-8647-882ccf63b2be
https://github.com/usememos/memos/commit/7670c9536000bb32c6345d4906a91268dcddd5fc

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.