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VulnerabilityPublished

CVE-2026-111246: Apache TomEE · Resource Exposure

Affects Apache TomEESource CVE Database V5

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Not known to be exploited : upgrade to 10.0.0-M1 soon.

Data as of 10 Nov 2026, 15:35 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 10.0.0-M1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade Apache TomEE and org.apache.tomee/openejb-http to 10.0.0-M1.

Affected software

ProductAffectedFixed in
Apache TomEEorg.apache.openejb:openejb-httpAffected
  • >=4.5.2 <=4.7.5
Fixed in–
Apache TomEEorg.apache.tomee:openejb-httpAffected
  • >=7.0.0-M1 <10.0.0-M1
  • >=10.0.0-M1 <=10.2.0
  • =11.0.0-M1
Fixed in
  • 10.0.0-M1
Mavenorg.apache.openejb/openejb-httppkg:maven/org.apache.openejb/openejb-httpOther threatsAffected
  • >=4.5.2 <=4.7.5
Fixed in–
Mavenorg.apache.tomee/openejb-httppkg:maven/org.apache.tomee/openejb-httpOther threatsAffected
  • >=7.0.0-M1 <10.0.0-M1
  • >=10.0.0-M1 <=10.2.0
  • =11.0.0-M1
Fixed in
  • 10.0.0-M1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should block network access to the embedded OpenEJB HTTP server from untrusted clients to prevent exploitation. Alternatively, migrating to TomEE distributions based on Tomcat, which do not have this session isolation issue, is recommended. A fix is available starting from version 10.0.0-M1; upgrading to this or later versions will resolve the vulnerability.

Description

Apache TomEE's embedded OpenEJB HTTP server does not properly isolate HTTP sessions between multiple web applications hosted on it. This allows a remote attacker to reuse a session established in one web application in another, potentially causing one application to trust session state set by another. This issue affects deployments running several web applications on the embedded HTTP server. Users are advised to block untrusted network access to the embedded HTTP server or migrate to TomEE distributions based on Tomcat.

References

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