CVE-2026-86100: SSRF (CVSS 6.4)

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.

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CVSS v3.1 Score

6.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.09%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

References

Other 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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-86100? +

CVE-2026-86100 has a CVSS v3.1 score of 6.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-86100? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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