High (8.8) in Red Hat JBoss Seam 2. In CISA KEV since 2021-12-10. EPSS 83% chance of exploitation in the next 30 days.
JBoss Seam 2 (jboss-seam2), as used in JBoss Enterprise Application Platform 4.3.0 for Red Hat Linux, does not properly sanitize inputs for JBoss Expression Language (EL) expressions, which allows remote attackers to execute arbitrary code via a crafted URL. NOTE: this is only a vulnerability when the Java Security Manager is not properly configured.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
83% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)