Vulnerability in Owen2345 Camaleoncms
CVE-2026-73330
CamaleonCMS 2.9.1 contains a server-side template injection vulnerability that allows authenticated administrators to execute arbitrary commands by embedding ERB tags in the email parameter of the test_email settings action, which are evaluated when an SMTP rejection reflects the recipient address back in the exception message rendered as an inline ERB template. Attackers can submit a crafted email parameter containing ERB expressions through the admin settings test_email endpoint, causing the Rails inline template renderer to evaluate attacker-controlled Ruby code and achieve arbitrary command execution as the Rails process user.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Owen2345 Camaleoncms — versions 0
Weakness classification (CWE)
References
- Product Repository (product, patch)
- Blog Post (product)
- www.vulncheck.com/advisories/camaleoncms-server-side-template-injection-via-tes… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73330?
- CVE-2026-73330 is a medium-severity vulnerability in Owen2345 Camaleoncms, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 6.6/10. Published 2026-08-12.
- How severe is CVE-2026-73330?
- Medium severity. CVSS v3 base score is 6.6 out of 10.