#VU70713 Stored cross-site scripting in memos - CVE-2022-4866

Vulnerability identifier: #VU70713

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-2022-4866

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 memos. 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/39c04778-6228-4f07-bdd4-ab17f246dbff
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.