SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

CVE-2025-40846

Improper Input Validation, the returnUrl parameter in Account Security Settings lacks proper input validation, allowing attackers to redirect users to malicious websites (Open Redirect) and inject JavaScript code to perform cross site scripting attack.

HIGH 7.1EPSS 0.34%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Improper Input Validation, the returnUrl parameter in Account Security Settings lacks proper input validation, allowing attackers to redirect users to malicious websites (Open Redirect) and inject JavaScript code to perform cross site scripting attack. The vulnerability affects Halo versions up to 2.174.101 and all versions between 2.175.1 and 2.184.21

CVSS 4.0
7.1 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.34% probability · 28th percentile
CISA KEV
Not listed
Weakness
CWE-20, CWE-601
Source
vulnerability@ncsc.ch

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.