Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.1.3 security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High : upgrade Red Hat undertow to 8.1.3 soon.
Data as of 5 Nov 2026, 17:18 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 7.5 |
|---|
- Patch
- Available – fixed in 8.1.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 3 Dec 2025
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 5 Nov 2026.
What to do
Upgrade org.wildfly.extension/undertow to 8.1.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Mavenorg.wildfly.extension/undertowpkg:maven/org.wildfly.extension/undertowOther 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
Red Hat has released version 8.1.3 of JBoss Enterprise Application Platform to address these vulnerabilities. Users should apply this update after ensuring all previously released errata are applied and backing up their systems. The update includes upgrades to Undertow and other components to fix the issues. No additional mitigations or workarounds are specified in the advisory.
Description
Red Hat JBoss Enterprise Application Platform 8.1.3 includes important security fixes addressing vulnerabilities in the Undertow HTTP server component. These fixes resolve issues such as failure to reject malformed Host headers that could lead to cache poisoning and SSRF, an out-of-memory condition when parsing form data with application/x-www-form-urlencoded encoding, and an HTTP/2 denial-of-service vulnerability. The update replaces version 8.1.2 and includes multiple component upgrades to mitigate these security risks.
References
- access.redhat.com/errata/RHSA-2026:0386 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2275287 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2392306 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2408784 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-30596 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31250 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31326 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31344 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31345 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31380 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31389 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31396 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31414 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31421 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31474 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31494 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31495 (opens in a new tab)
- issues.redhat.com/browse/JBEAP-31601 (opens in a new tab)