CVE-2023-43876 Cross-site scripting in n/a

What is CVE-2023-43876?

CVE-2023-43876 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 28 Sep 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A Cross-Site Scripting (XSS) vulnerability in installation of October v.3.4.16 allows an attacker to execute arbitrary web scripts via a crafted payload injected into the dbhost field.

Weakness: CWE-79

Which versions are affected by CVE-2023-43876?

It affects 1 product.

Products include Octobercms October.

How do I fix CVE-2023-43876?

No fix has been published for CVE-2023-43876 yet. Limit exposure of the affected software until one is available.

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-2023-43876 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-43876 exists.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Octobercms October

• CVE-2021-32648 October CMS Improper Authentication Exploited High 8.2
• CVE-2021-3311 October CMS Session ID not invalidated after logout Critical 9.8
• CVE-2017-1000194 October CMS File Upload Vulnerability Critical 9.8
• CVE-2017-1000196 Code injection in n/a Critical 9.8
• CVE-2017-1000197 Path traversal in n/a Critical 9.8

All Octobercms October vulnerabilities

Sources

• CVE record
• NVD
• OSV
• How this page is made