CVE-2026-107851

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Source
https://cve.org/CVERecord?id=CVE-2026-107851
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107851.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107851
Aliases
Published
2026-10-09T20:26:31Z
Modified
2026-10-10T10:45:28Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Contao: Improper access control in the table access voter
Details

Contao is an Open Source CMS. From version 5.7.0 until 5.7.12, TableAccessVoter::hasAccessToModule() in core-bundle/src/Security/Voter/DataContainer/TableAccessVoter.php caches authorization decisions using only $tokenHash, a hash of the user's security token, and omits the table returned by getDataSource(). If one request first checks a table allowed to the user and then a different denied table, the voter can reuse the allowed result, while DefaultDataContainerVoter can convert an incorrect abstention into a grant. A low-privileged backend user can consequently read, create, update, or delete records in tables outside assigned module permissions, including tables containing member or newsletter-subscriber data. This issue is fixed in version 5.7.12.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-524",
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107851.json"
}
References

Affected packages

Git / github.com/contao/contao

Affected ranges

Type
GIT
Repo
https://github.com/contao/contao
Events
Introduced
72bb9e0235574397cf06a2165dc21fdd19186c74
Fixed
a6543f49a92187a7368f51b290179c4795386e23
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "5.7.0"
        },
        {
            "fixed": "5.7.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

5.*
5.7.0
5.7.1
5.7.10
5.7.11
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6
5.7.7
5.7.8
5.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107851.json"