CVE-2026-107848

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-107848
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107848.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107848
Aliases
Published
2026-10-09T20:22:12Z
Modified
2026-10-10T10:45:14Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Contao: Cross-site request forgery in custom backend actions
Details

Contao is an Open Source CMS. From version 4.0.0 until 5.3.50 and 5.7.12, RequestTokenListener validates REQUEST_TOKEN only for POST requests, while the declarative GET guard runs only when an act parameter is present. Backend actions dispatched through the key parameter can therefore execute without a CSRF token when an authenticated backend user loads an attacker-controlled URL. Reachable actions remain limited to modules available to that user, and the advisory demonstrates destructive or state-changing actions rather than privilege escalation. This issue is fixed in versions 5.3.50 and 5.7.12.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-352"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107848.json"
}
References

Affected packages

Git / github.com/contao/contao

Affected ranges

Type
GIT
Repo
https://github.com/contao/contao
Events
Introduced
84b2fe637d5ead531f117f26b48d1b9de8df4074
Fixed
a11109b60dedcbd99e32a4e8550afdadb500f2c5
Introduced
c5e3841e5107ab36ae2bf7795fb8d51d3d30f88b
Fixed
a6543f49a92187a7368f51b290179c4795386e23
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "4.0.0"
        },
        {
            "fixed": "5.3.50"
        },
        {
            "introduced": "5.4.0-RC1"
        },
        {
            "fixed": "5.7.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107848.json"