CVE-2023-26131: Algernon Project Algernon

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

All versions of the package github.com/xyproto/algernon/engine; all versions of the package github.com/xyproto/algernon/themes are vulnerable to Cross-site Scripting (XSS) via the themes.NoPage(filename, theme) function due to improper user input sanitization. Exploiting this vulnerability is possible when a file/resource is not found.

Affected products

• Algernon Project Algernon: any version

Published 2023-05-31. Last modified 2026-06-17.