SSRF in Owen2345 Camaleoncms
CVE-2026-86100
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/owen2345/camaleon-cms (product)
- github.com/owen2345/camaleon-cms/blob/2.9.1/app/helpers/camaleon_cms/uploader_h… (technical-description)
- github.com/owen2345/camaleon-cms/commit/3c46b6e512518ded476226162305c8eae00aac3f (patch)
- github.com/owen2345/camaleon-cms/pull/1133 (issue-tracking, patch)
- github.com/owen2345/camaleon-cms/releases/tag/2.9.2 (release-notes)
- www.vulncheck.com/advisories/camaleon-cms-2.7.5-through-2.9.1-ssrf-via-http-red… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86100?
- CVE-2026-86100 is a medium-severity vulnerability in Owen2345 Camaleoncms, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2026-09-05.
- How severe is CVE-2026-86100?
- Medium severity. CVSS v3 base score is 6.4 out of 10.