CVE-2026-66748 (GCVE-0-2026-66748)
Vulnerability from cvelistv5 – Published: 2026-07-28 15:19 – Updated: 2026-08-14 16:50 X_Open Source
VLAI
EPSS
VEX
Title
Camaleon CMS 2.1.1 - 2.9.1 Authenticated RCE via select_eval Custom Field
Summary
Camaleon CMS versions 2.1.1 through 2.9.1 contains an authenticated remote code execution vulnerability that allows users with custom_fields manage permission to execute arbitrary Ruby code by supplying a malicious expression through the select_eval custom field type. Attackers can store an attacker-controlled Ruby expression in the field options command parameter, which is evaluated via instance_eval within an ERB view whenever a post edit page is rendered, achieving server-side code execution with web server process privileges.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 19:26 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://tpaidakis.com/writeups/camaleon-cms-rce-s… | technical-descriptionexploit |
| https://enrik-m.github.io/posts/Camaleon-CMS-Vuln… | technical-descriptionexploit |
| https://github.com/theopaid/Camaleon-CMS---Authen… | exploittechnical-description |
| https://github.com/owen2345/camaleon-cms/releases… | release-notes |
| https://github.com/owen2345/camaleon-cms/pull/1136 | issue-tracking |
| https://github.com/owen2345/camaleon-cms/commit/1… | patch |
| https://www.vulncheck.com/advisories/camaleon-cms… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| owen2345 | camaleon-cms |
Affected:
2.1.1 , ≤ 2.9.1
(semver)
Affected: 2.9.2 (semver) cpe:2.3:a:tuzitio:camaleon_cms:*:*:*:*:*:*:*:* cpe:2.3:a:tuzitio:camaleon_cms:2.9.2:*:*:*:*:*:*:* |
Date Public
2026-04-05 00:00
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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