CVE-2026-86100: owen2345 CamaleonCMS

Camaleon CMS 2.7.5 through 2.9.1 SSRF via HTTP Redirect in Upload from URL

CVSS 5.3 MediumEPSS 0.0032 · 25th percentile

Published by the CVE Program (CNA: VulnCheck) at 4 Sept 2026, 23:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
owen2345	CamaleonCMS Package name: camaleon_cms https://rubygems.org/gems/camaleon_cms pkg:gem/camaleon_cms	affected 2.7.5 to before 2.9.2 custom Other versions: unaffected

Identifiers

CVE-2026-86100

CNA

VulnCheck

Weakness (CWE)

CWE-918

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	CNA (VulnCheck)Used for this record
6.4	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0032, the 25th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 4 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/owen2345/camaleon-cms product
github.com/owen2345/camaleon-cms/pull/1133 patchissue-tracking
github.com/owen2345/camaleon-cms/commit/3c46b6e512518ded476226162305c8eae00aac3f patch
github.com/owen2345/camaleon-cms/blob/2.9.1/app/helpers/camaleon_cms/uploader_helper.rb technical-description
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-redirect-in-upload-from-url third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.