CVE-2026-126662

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Source
https://cve.org/CVERecord?id=CVE-2026-126662
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126662.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-126662
Aliases
  • GHSA-9jfh-v443-w3fj
Published
2026-11-11T12:24:37Z
Modified
2026-11-12T02:48:35Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Contao 4.0.0 before 5.3.54, 5.4.0 before 5.7.17, and 6.0.0 before 6.0.6 Filemount Bypass via Edit-Multiple
Details

Contao 4.0.0 before 5.3.54, 5.4.0 before 5.7.17, and 6.0.0 before 6.0.6 contains an access control bypass vulnerability that allows filemount-restricted backend users to modify folders outside their filemount via the file manager Edit-Multiple operation. Attackers holding the protected or syncExclude field permission can submit outside folder paths in the IDS parameter to publish protected folders or exclude them from DBAFS synchronization, exposing files for public download.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126662.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "4.0.0"
                        },
                        {
                            "fixed": "5.3.54"
                        },
                        {
                            "introduced": "5.4.0-RC1"
                        },
                        {
                            "fixed": "5.7.17"
                        },
                        {
                            "introduced": "6.0.0-RC1"
                        },
                        {
                            "fixed": "6.0.6"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "4.0.0"
                        },
                        {
                            "fixed": "5.3.54"
                        },
                        {
                            "introduced": "5.4.0-rc1"
                        },
                        {
                            "fixed": "5.7.17"
                        },
                        {
                            "introduced": "6.0.0-rc1"
                        },
                        {
                            "fixed": "6.0.6"
                        }
                    ],
                    "source": "CPE_FIELD",
                    "strategy": "CPEApplicability"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "4.0.0"
                        },
                        {
                            "fixed": "5.3.54"
                        },
                        {
                            "introduced": "5.4.0"
                        },
                        {
                            "fixed": "5.7.17"
                        },
                        {
                            "introduced": "6.0.0"
                        },
                        {
                            "fixed": "6.0.6"
                        }
                    ],
                    "source": "DESCRIPTION"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/contao/contao

Affected ranges

Type
GIT
Repo
https://github.com/contao/contao
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c01898f99c5d5af50a227ee85f27270c5427f900
Fixed
a104202df2b532bb64805a0856fc94bb0bddbb66
Fixed
240e169441796bb703819ee0e22728708f946b70
Fixed
4b4b69a14eb32775caf7ea3b15a38af6a38a85e7
Fixed
1ef9c449fecbac9bba7b107b016f0874148b8fd9
Fixed
76ddadae9056acafc478be26426e555f3c66546e
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "c01898f99c5d5af50a227ee85f27270c5427f900"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "a104202df2b532bb64805a0856fc94bb0bddbb66"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "240e169441796bb703819ee0e22728708f946b70"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "5.3.54",
            "range": [
                {
                    "fixed": "4b4b69a14eb32775caf7ea3b15a38af6a38a85e7"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "5.7.17",
            "range": [
                {
                    "fixed": "1ef9c449fecbac9bba7b107b016f0874148b8fd9"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "6.0.6",
            "range": [
                {
                    "fixed": "76ddadae9056acafc478be26426e555f3c66546e"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

5.*
5.3.0
5.3.0-RC1
5.3.0-RC2
5.3.0-RC3
5.3.0-RC4
5.3.1
5.3.10
5.3.11
5.3.12
5.3.13
5.3.14
5.3.15
5.3.16
5.3.17
5.3.18
5.3.19
5.3.2
5.3.20
5.3.21
5.3.22
5.3.23
5.3.24
5.3.25
5.3.26
5.3.27
5.3.28
5.3.29
5.3.3
5.3.30
5.3.31
5.3.32
5.3.33
5.3.34
5.3.35
5.3.36
5.3.37
5.3.38
5.3.39
5.3.4
5.3.40
5.3.41
5.3.42
5.3.43
5.3.44
5.3.45
5.3.46
5.3.47
5.3.48
5.3.49
5.3.5
5.3.50
5.3.51
5.3.52
5.3.53
5.3.6
5.3.7
5.3.8
5.3.9
5.6.0-RC1
5.7.0
5.7.0-RC1
5.7.0-RC2
5.7.0-RC3
5.7.0-RC4
5.7.1
5.7.10
5.7.11
5.7.12
5.7.13
5.7.14
5.7.15
5.7.16
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6
5.7.7
5.7.8
5.7.9
6.*
6.0.0
6.0.0-RC1
6.0.0-RC2
6.0.1
6.0.2
6.0.3
6.0.4
6.0.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126662.json"