| ID |
CVE-2026-55825
|
| Sažetak |
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. |
| Reference |
|
| CVSS |
| Base: | 3.1 |
| Impact: | 1.4 |
| Exploitability: | 1.6 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| NETWORK |
HIGH |
LOW |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| LOW |
NONE |
NONE |
|
| CVSS vektor |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| Zadnje važnije ažuriranje |
01-08-2026 - 00:17 |
| Objavljeno |
31-07-2026 - 20:16 |
