CVE-2026-15555

HIGH
MEDIUM Priority: 0.08 BB Relevance: 63/100
Published: 2026-08-11 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Bug Bounty Relevance

63 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.95%
Raw Score 0.009480
Percentile 61.2%
Date 2026-10-31

EPSS Trend

2026-10-31
0.00948
2026-10-30
0.00948

Intelligence Sources

mitre ref →
nvd ref →