CVE-2026-15555
Advisory lineage Upstream: 0 Downstream: 3
Awaiting Analysis
Published: 11 Aug 2026, 08:49
Last modified:17 Sept 2026, 23:27
Vulnerability Summary
Overall Risk (default)
medium
35/100 CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
0.28% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
11 Aug 2026, 08:49
Published
Vulnerability first disclosed
17 Sept 2026, 23:27
Last Modified
Vulnerability information updated
Description
A flaw was found in JBoss marshalling. The Infinispan session replication path deserializes replicated session data via the JBoss Marshalling River unmarshaller with no class filtering — enabling RCE via deserialization gadget chains on every cluster node.
CVSS Metrics
- v3.1•HIGH•Score: 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Trends
Current EPSS score: 0.28%• Percentile: 20%
Techniques & Countermeasures
- CWE-502•Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.