EUVD Vulnerability Catalog

EUVD-2026-77455

Severity: CRITICAL Base Score: 9.4 CVSS Version: 4.0

Vulnerability Description

froxlor versions before 2.2.5 fail to validate newline characters in subdomain redirect URLs, allowing authenticated customers to inject arbitrary nginx or Apache configuration directives. Attackers can supply URLs containing literal newlines that are written verbatim into vhost config files during cron rebuild, enabling web server configuration corruption, denial of service, or hijacking of HTTP responses across hosted domains.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): Low
User Interaction (UI): None
Vulnerability Confidentiality Impact (VC): High
Vulnerability Integrity Impact (VI): High
Vulnerability Availability Impact (VA): Low
Subsequent Confidentiality Impact (SC): High
Subsequent Integrity Impact (SI): High
Subsequent Availability Impact (SA): Low

Affected Vendors & Systems

Vendor froxlor

References & Advisory Links

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

VulnCheck

EPSS Probability

0

Known Aliases
CVE-2026-90937 GHSA-r2fc-pw6p-x28w
Published On

2026-09-14

Last Updated

2026-09-14