High (8.1). EPSS 70% chance of exploitation in the next 30 days. Fixed in org.apache-extras.beanshell:bsh 2.0b6.
BeanShell (bsh) before 2.0b6, when included on the classpath by an application that uses Java serialization or XStream, allows remote attackers to execute arbitrary code via crafted serialized data, related to XThis.Handler.
Severity
CVSS 3.1
8.1 high
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
70% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)