CVE-2026-15555: Deserialization of Untrusted Data in Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
CVE-2026-15555 is a deserialization vulnerability in Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7. The flaw exists in the Infinispan session replication path, which deserializes session data without class filtering, allowing remote code execution via crafted deserialization payloads on cluster nodes. A security update is available in version 7.4.25 that addresses this issue.
AI Analysis
Technical Summary
This vulnerability involves the JBoss Marshalling River unmarshaller used in the Infinispan session replication path of Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7. The unmarshaller does not apply class filtering when deserializing replicated session data, enabling attackers to execute arbitrary code remotely by exploiting deserialization gadget chains on any cluster node. The vulnerability is tracked as CVE-2026-15555 with a CVSS 3.1 score of 8.8 (high severity). Red Hat has released a security update in version 7.4.25 to fix this issue.
Potential Impact
Successful exploitation allows remote attackers to achieve remote code execution on every cluster node that processes replicated session data. This can lead to full compromise of affected systems running vulnerable versions of Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7.
Mitigation Recommendations
Red Hat has released an official security update in Red Hat JBoss Enterprise Application Platform version 7.4.25 that fixes this vulnerability. Users should upgrade to version 7.4.25 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-15555: Deserialization of Untrusted Data in Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
Description
CVE-2026-15555 is a deserialization vulnerability in Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7. The flaw exists in the Infinispan session replication path, which deserializes session data without class filtering, allowing remote code execution via crafted deserialization payloads on cluster nodes. A security update is available in version 7.4.25 that addresses this issue.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the JBoss Marshalling River unmarshaller used in the Infinispan session replication path of Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7. The unmarshaller does not apply class filtering when deserializing replicated session data, enabling attackers to execute arbitrary code remotely by exploiting deserialization gadget chains on any cluster node. The vulnerability is tracked as CVE-2026-15555 with a CVSS 3.1 score of 8.8 (high severity). Red Hat has released a security update in version 7.4.25 to fix this issue.
Potential Impact
Successful exploitation allows remote attackers to achieve remote code execution on every cluster node that processes replicated session data. This can lead to full compromise of affected systems running vulnerable versions of Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7.
Mitigation Recommendations
Red Hat has released an official security update in Red Hat JBoss Enterprise Application Platform version 7.4.25 that fixes this vulnerability. Users should upgrade to version 7.4.25 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-8qrr-8665-54fg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-15555"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Patch Information
Threat ID: 6a7c9b72bf8831d539ce09b9
Added to database: 08/12/2026, 16:12:34 UTC
Last enriched: 09/18/2026, 01:58:45 UTC
Last updated: 09/28/2026, 01:47:41 UTC
Views: 53
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