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Vulnerabilities CVE-2026-78145

CVE-2026-78145

Medium
Open
TLP:CLEAR

CTFd __init__.py _is_safe_url redirect

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Description

A vulnerability has been found in CTFd up to 3.8.4. The affected element is the function _is_safe_url of the file CTFd/utils/validators/__init__.py. Such manipulation of the argument Next leads to open redirect. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 5d8515842fd1ab2c3a9f2dde9ffca907aa334ea9. Upgrading the affected component is recommended.

Details

CVSS Score
5.3
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Confidence
90%
Published
Aug 23, 2026
Last Modified
Aug 23, 2026
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