CVE-2026-15561: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 · Unthrottled Resource Allocation
Affects Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 8 Nov 2026, 23:24 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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 11 Aug 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 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat JBoss Enterprise Application Platform 7.4.25 | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-activemq-artemis | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-glassfish-jsf | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-ironjacamar | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-jackson-annotations | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7eap7-jackson-core | Affected– | Fixed in– |
AI-suggested
Users should monitor the vendor advisory for updates and apply patches once available.
Description
A flaw was found in EAP's undertow http/1.1 chunked-transfer decoder. missing limits on size and count would allow an attacker to use an unauthenticated connection to drive the JVM to an OutOfMemory error, stopping all deployments on the listener, and achieving Denial of Service.
References
- access.redhat.com/security/cve/CVE-2026-15561 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2483133 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53644 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53806 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53645 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53646 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70228 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70229 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70230 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70277 (opens in a new tab)