Vulnerability identifier: #VU93481

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-25637

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
October CMS
Web applications / CMS

Vendor: OctoberCMS

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 passed via the X-October-Request-Handler header. A remote attacker can execute arbitrary HTML and script code in user's browser in context of vulnerable website, however requires the possibility to intercept and modify HTTP headers sent by the victim.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

October CMS: 3.5.0 - 3.5.14, 3.4.0 - 3.4.18, 3.3.0 - 3.3.20, 3.2.0 - 3.2.23

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External links
http://github.com/octobercms/october/security/advisories/GHSA-rjw8-v7rr-r563

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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.