CVE-2026-55825
CVE-2026-55825 · Contao: Possible path traversal in job download URIs
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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/debug_log.csv becomes victim-job/debug_log.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.
CVSS 3.1 · Niedrig · EPSS 0,3% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: php
Betroffene Produkte und Versionen
contao
- Softwareversionen
- >= 5.7.0, < 5.7.7: Betroffen
Keine Korrektur veröffentlicht
contao/contao Packagist
- Softwareversionen
- 5.7.0
- 5.7.1
- 5.7.2
- 5.7.3
- 5.7.4
- 5.7.5
- 5.7.6
- Betroffene Versionsbereiche
- ECOSYSTEM: ≥ 5.7.0, < 5.7.7
Auf 5.7.7 aktualisieren
contao/core-bundle Packagist
- Softwareversionen
- 5.7.0
- 5.7.1
- 5.7.2
- 5.7.3
- 5.7.4
- 5.7.5
- 5.7.6
- Betroffene Versionsbereiche
- ECOSYSTEM: ≥ 5.7.0, < 5.7.7
Auf 5.7.7 aktualisieren