Medium (5.3) in openwaygroup way4. EPSS 0.8% chance of exploitation in the next 30 days.
/way4acs/enroll in OpenWay WAY4 ACS before 1.2.278-2693 allows unauthenticated attackers to leverage response differences to discover whether a specific payment card number is stored in the system.
Severity
CVSS 3.1
5.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)