SCA: security update for contao/contao, contao/core-bundle (GHSA-grm4-wm43-9jh5)

low Tenable Self-Hosted Container Security Plugin ID 445779

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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. (CVE-2026-55825)

Solution

Update the contao/contao library and its related packages to version 5.7.7 or later.

See Also

https://github.com/advisories/GHSA-grm4-wm43-9jh5

Plugin Details

Severity: Low

ID: 445779

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 8/7/2026

Updated: 8/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:N/A:N

CVSS Score Source: CVE-2026-55825

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.7

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/6/2026

Vulnerability Publication Date: 7/31/2026

Reference Information

CVE: CVE-2026-55825

cwe: CWE-22