VDB
CVE-2026-14180
CVE-2026-14180
PUBLISHED
CVSS 5.3 MEDIUM
Reported by redhat · Published August 11, 2026
A flaw was found in the ChunkReader component of the Undertow HTTP server, which is used by WildFly and JBoss EAP to handle chunked transfer encoding. The issue occurs because the parser uses a single internal variable to store both the remaining chunk size and state flags. By sending a specially crafted request with an extremely large chunk size, an attacker can cause these values to overlap, tricking the parser into thinking a request has finished prematurely. This can allow a second, "smuggled" request to be processed out of sync, potentially bypassing security controls.
Risk Scores
CVSS 3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1.8.GA | 2.3.26.SP3-redhat-00001 |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.40.0-8.redhat_00024.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.1.7-1.SP1_redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.0.5-1.Final_redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:1.85.0-1.redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:1.2.7-1.redhat_00002.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:801.8.0-1.GA_redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:6.6.54-1.Final_redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.1.5-5.redhat_00008.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.0.22-1.Final_redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.0.5-1.redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.0.7-4.redhat_00001.1.el10eap |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.1.0-1.redhat_00001.1.el10eap |
…and 261 more
Timeline
- Aug 11, 2026 CVE Published
- Aug 12, 2026 Coalition ESS Score
- Aug 16, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 3, 2026 EPSS Score
- Sep 6, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
References
- RHSA-2026:70228 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70229 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70230 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:70277 vendor-advisoryx_refsource_REDHAT
- vdb-entryx_refsource_REDHAT
- RHBZ#2494771 issue-trackingx_refsource_REDHAT