What’s Vulnerable › Vulnerabilities

CVE-2026-116009: Camaleon CMS before 2.9.3 Path Traversal RCE via Media crop_url Action

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-24 · updated 2026-10-29
• Weakness: CWE-22

Description

Camaleon CMS before 2.9.3 contains a path traversal vulnerability that allows users with only the media permission to write arbitrary files by supplying ../ sequences in the name parameter. Attackers can send a base64 data: URI to the crop_url media action to write an ERB template into a theme's views directory, which executes when rendered.

Affected products

• owen2345 camaleon-cms: before 2.9.3 — fixed in 2.9.3

How to fix

Upgrade to a fixed version: owen2345 camaleon-cms 2.9.3. Check the vendor advisory for mitigations.

References

• https://github.com/owen2345/camaleon-cms/blob/2.9.2/app/helpers/camaleon_cms/uploader_helper.rb#L277-L287
• https://github.com/owen2345/camaleon-cms/commit/430cce27ea63a397a7b7fa0260b4ec2128ea63fd
• https://github.com/owen2345/camaleon-cms/pull/1201
• https://github.com/owen2345/camaleon-cms/pull/1211
• https://github.com/owen2345/camaleon-cms/releases/tag/2.9.3
• https://www.vulncheck.com/advisories/camaleon-cms-before-2.9.3-path-traversal-rce-via-media-crop-url-action

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