What’s Vulnerable › Vulnerabilities

CVE-2026-86100: Camaleon CMS 2.7.5 through 2.9.1 SSRF via HTTP Redirect in Upload from URL

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-05 · updated 2026-09-08
• Weakness: CWE-918

Description

Camaleon CMS versions 2.7.5 through 2.9.1 fail to validate redirect targets when fetching remote files in the Upload from URL media feature. Authenticated attackers can supply URLs that pass initial validation but redirect to internal network addresses, allowing server-side request forgery to internal services.

Affected products

• owen2345 CamaleonCMS: from 2.7.5 before 2.9.2 — fixed in 2.9.2

How to fix

Upgrade to a fixed version: owen2345 CamaleonCMS 2.9.2. Check the vendor advisory for mitigations.

References

• https://github.com/owen2345/camaleon-cms
• https://github.com/owen2345/camaleon-cms/blob/2.9.1/app/helpers/camaleon_cms/uploader_helper.rb
• https://github.com/owen2345/camaleon-cms/commit/3c46b6e512518ded476226162305c8eae00aac3f
• https://github.com/owen2345/camaleon-cms/pull/1133
• https://github.com/owen2345/camaleon-cms/releases/tag/2.9.2
• https://www.vulncheck.com/advisories/camaleon-cms-2.7.5-through-2.9.1-ssrf-via-http-redirect-in-upload-from-url

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