CVE-2026-86531: Apache TomEE · Unthrottled Resource Allocation
Affects Apache TomEESource CVE Database V5
Not known to be exploited : upgrade to 10.0.0-M1 soon.
Data as of 10 Nov 2026, 16:02 UTC
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
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Apache TomEEorg.apache.openejb:openejb-http | Affected
| Fixed in– |
| Apache TomEEorg.apache.tomee:openejb-http | Affected
| Fixed in
|
Mavenorg.apache.openejb/openejb-httppkg:maven/org.apache.openejb/openejb-httpOther threats | Affected
| Fixed in– |
Mavenorg.apache.tomee/openejb-httppkg:maven/org.apache.tomee/openejb-httpOther threats | Affected
| Fixed in
|
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 Tomcat-based TomEE distributions is recommended. A fix is available starting with Apache TomEE version 10.0.0-M1, so upgrading to this or later versions will remediate the vulnerability.
Description
Apache TomEE's embedded OpenEJB HTTP server does not limit the size of incoming request bodies or multipart requests and fails to remove temporary files created for multipart parts. This can allow a remote unauthenticated attacker to cause excessive memory or disk usage, resulting in denial of service. Deployments using Tomcat connectors are not affected. Users are advised to block network access to the embedded HTTP server from untrusted clients or migrate to Tomcat-based TomEE distributions.