CVE-2026-78145
CTFd __init__.py _is_safe_url redirect
LOW 2.1EPSS 0.6%
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.
- Affected
- CTFd
- CVSS v4.0 VULDB
- 2.1 LOW
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULDB
- 4.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - CVSS v2.0 VULDB
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N - EPSS
- 0.56% chance of exploitation in the next 30 days, 45th percentile
- Published
- 2026-08-23
- Updated
- 2026-08-24