CVE-2026-55825

Source
https://cve.org/CVERecord?id=CVE-2026-55825
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55825.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55825
Aliases
  • GHSA-grm4-wm43-9jh5
Published
2026-07-31T19:07:40.609Z
Modified
2026-08-02T03:47:28.407442016Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Contao: Possible path traversal in job download URIs
Details

Contao is an Open Source CMS. In versions 5.7.0 through 5.7.6, an authenticated backend user who can access one job can request an attachment identifier containing ../ segments and make the job attachment download endpoint read a file from another job directory inside var/job-attachments. The controller authorizes only the jobUuid route parameter. The later attachment lookup joins that authorized job UUID with the attacker-controlled identifier, then passes the combined path to the virtual filesystem. VirtualFilesystem::resolve() canonicalizes the whole path and only rejects paths that escape the filesystem mount, so authorized-job/../victim-job/debuglog.csv becomes victim-job/debuglog.csv. This is a cross-job authorization bypass for known job attachment paths. It is not a practical brute-force against unknown jobs because job directories are UUID v4 values.

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55825.json",
    "cwe_ids": [
        "CWE-22"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/contao/contao

Affected ranges

Type
GIT
Repo
https://github.com/contao/contao
Events
Database specific
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ],
    "extracted_events": [
        {
            "introduced": "5.7.0"
        },
        {
            "fixed": "5.7.7"
        },
        {
            "fixed": "5.7.6"
        }
    ]
}

Affected versions

5.*
5.7.0
5.7.1
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55825.json"