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  4. CVE 2026 87755 apache tomee stateful session bean hijacking via
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-87755

Apache TomEE: Stateful session bean hijacking via predictable session identifiersCVE-2026-87755

Answer in brief

CVE-2026-87755 records a Unknown severity vulnerability in Apache TomEE: Stateful session bean hijacking via predictable session identifiers. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.openejb:openejb-core (generic), Apache Software Foundation/org.apache.tomee:openejb-core (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 10, 2026Updated Nov 10, 2026Source checked Nov 10, 2026First seen by HOL Nov 10, 2026Material review Nov 10, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/org.apache.openejb:openejb-core (generic), Apache Software Foundation/org.apache.tomee:openejb-core (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/org.apache.openejb:openejb-coregeneric>=4.0.0-beta-1 <=4.7.5Not reported
Apache Software Foundation/org.apache.tomee:openejb-coregeneric>=7.0.0-M1 <10.0.0-M1 || >=10.0.0-M1 <10.3.0 || >=11.0.0-M1 <11.0.0-M210.3.0, 11.0.0-M2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/org.apache.openejb:openejb-core, Apache Software Foundation/org.apache.tomee:openejb-core.
  2. 2Review the reported fix. Update Apache Software Foundation/org.apache.tomee:openejb-core to 10.3.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 10, 2026

Sources and claim methodology

  • Source referencelists.apache.org
Upstream source description

Stateful session bean identifiers are not generated from a cryptographically secure random source. A remote attacker with access to the EJB remote endpoint who holds one valid identifier can derive those of other clients' sessions and invoke methods on their beans, exposing or modifying other users' session state. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache TomEE: Authentication bypass for accounts without a stored password in SQL login moduleSame apache software foundation/org.apache.openejb package
  • Apache TomEE: Local code execution via predictable passivation files in the shared temporary directorySame apache software foundation/org.apache.openejb package
  • Apache TomEE: EJB method authorization is silently skipped on JDK 21+Same apache software foundation/org.apache.tomee package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-340
Source
CVE List V5
Source checked
Nov 10, 2026
References
1 linked source
Open source record