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VulnerabilityPublished

CVE-2026-87758: The remote EJB client does not verify that the hostname of the server it connects to matches the

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Authoritative record:CVE-2026-87758· High

Not known to be exploited · fixed in 11.0.0-M2 : patch Apache TomEE soon.

Data as of 10 Nov 2026, 19:05 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 11.0.0-M2, 10.3.0, 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-client to 11.0.0-M2, 10.3.0 or 10.0.0-M1.

Affected software

ProductAffectedFixed in
Apache TomEEorg.apache.openejb:openejb-clientAffected
  • >=4.0.0-beta-1 <=4.7.5
Fixed in–
Apache TomEEorg.apache.tomee:openejb-clientAffected
  • >=11.0.0-M1 <11.0.0-M2
Fixed in
  • 11.0.0-M2
Apache TomEEorg.apache.tomee:openejb-clientAffected
  • >=10.0.0-M1 <10.3.0
Fixed in
  • 10.3.0
Apache TomEEorg.apache.tomee:openejb-clientAffected
  • >=7.0.0-M1 <10.0.0-M1
Fixed in
  • 10.0.0-M1
Mavenorg.apache.openejb/openejb-clientpkg:maven/org.apache.openejb/openejb-clientOther threatsAffected
  • >=4.0.0-beta-1 <=4.7.5
Fixed in–
Mavenorg.apache.tomee/openejb-clientpkg:maven/org.apache.tomee/openejb-clientOther threatsAffected
  • >=7.0.0-M1 <10.0.0-M1
  • >=10.0.0-M1 <10.3.0
  • >=11.0.0-M1 <11.0.0-M2
Fixed in
  • 10.0.0-M1
  • 10.3.0
  • 11.0.0-M2

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

Description

The remote EJB client does not verify that the hostname of the server it connects to matches the server's TLS certificate. An attacker able to intercept network traffic between an EJB client and server can impersonate the server and read or modify the traffic, including credentials and invocation data. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

References

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