CVE-2026-56721

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-56721
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56721.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56721
Published
2026-08-11T15:48:59Z
Modified
2026-10-28T02:30:49Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
CamaleonCMS 2.9.2 Privilege Escalation via Parameter Confusion in UsersController
Details

CamaleonCMS version 2.9.2 and earlier contains a privilege escalation vulnerability via insecure direct object reference (IDOR) that allows authenticated low-privileged attackers to overwrite any user's credentials by exploiting a parameter confusion flaw between the authorization filter and action body in the UsersController. Attackers can send a PATCH request to the updated_ajax endpoint setting params[:id] to their own user ID to pass the self-authorization check while simultaneously setting params[:user_id] to a victim's ID, causing the controller to load and mutate the victim's account, including overwriting administrator passwords to achieve full site takeover.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-639"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56721.json"
}
References

Affected packages

Git / github.com/owen2345/camaleon-cms

Affected ranges

Type
GIT
Repo
https://github.com/owen2345/camaleon-cms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
26345034523a505cb01615509b7f0a665e89ae3e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "2.9.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "fixed":  "26345034523a505cb01615509b7f0a665e89ae3e"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

0.*
0.1.7
0.2.0
2.*
2.1.1
2.1.2
2.1.2.0
2.2.0
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.4.0
2.4.1
2.4.2
2.4.3
2.4.3.10
2.4.3.11
2.4.3.12
2.4.3.7
2.4.4
2.4.4.2
2.4.4.3
2.4.4.5
2.4.4.6
2.4.5
2.4.5.1
2.4.5.10
2.4.5.11
2.4.5.12
2.4.5.13
2.4.5.14
2.4.5.7
2.4.6.0
2.4.6.1
2.4.6.7
2.5.1
2.5.3
2.5.3.1
2.6.0
2.6.0.1
2.6.1
2.6.2
2.6.4
2.7.0
2.7.1
2.7.3
2.7.4
2.7.5
2.8.0
2.8.1
2.8.2
2.8.3
2.9.0
2.9.1
2.9.2
camaleon_cms-2.*
camaleon_cms-2.4.5.11.gem
v2.*
v2.0.0
v2.1.1.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56721.json"