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VulnerabilityPublished

CVE-2026-87755: Apache TomEE · Generation of Predictable Numbers or Identifiers

Affects Apache TomEESource CVE Database V5

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

Data as of 10 Nov 2026, 15:05 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 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-core to 11.0.0-M2, 10.3.0 or 10.0.0-M1.

Affected software

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

AI-suggested

Users should upgrade Apache TomEE to version 10.3.0 or 11.0.0-M2, where the issue is fixed. No other mitigations are specified.

Description

Apache TomEE versions prior to 10.3.0 and 11.0.0-M2 generate stateful session bean identifiers using a non-cryptographically secure random source. This flaw allows a remote attacker with a valid identifier to predict other clients' session identifiers and access or modify their session state. The issue is fixed in versions 10.3.0 and 11.0.0-M2.

References

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