CVE-2024-28235

Contao possible cookie sharing with external domains while checking protected pages for broken links

MEDIUM
6.5
CVSS Score
Published: April 9, 2024 at 03:50 PM UTC
Updated: June 17, 2026 at 07:21 AM UTC
1 product affected across 1 vendorContao

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.13.40v < 5.3.44.9.0 ≤ v < 4.13.405.0.0 ≤ v < 5.3.4
Affected range stops below 4.13.40, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.3.4, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200NVD-CWE-noinfo

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