CVE-2026-14180— Undertow-core: undertow:http request smuggling via oversized chunk-size bit overlap
Quick assessment
Affected
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Undertow是美国Undertow组织开源的一个Web服务器。 Undertow存在输入验证错误漏洞，该漏洞源于ChunkReader组件中的解析器使用单个内部变量存储剩余块大小和状态标志，攻击者通过发送特制请求的超大块大小导致这些值重叠，诱使解析器误认为请求已提前完成，可能导致第二个“夹带”请求被不同步处理，从而绕过安全控制。
Affected Version Matrix 139
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 | any |
affected |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | any |
affected |
| Red Hat | Red Hat Data Grid 8 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 8 | any |
affected |
any |
affected | ||
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
| Red Hat | Red Hat Fuse 7 | any |
affected |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | any |
affected |
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
any |
affected | ||
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.40.0-8.redhat_00024.1.el10eap< * |
unaffected |
0:4.1.7-1.SP1_redhat_00001.1.el10eap< * |
unaffected | ||
0:2.0.5-1.Final_redhat_00001.1.el10eap< * |
unaffected | ||
0:1.85.0-1.redhat_00001.1.el10eap< * |
unaffected | ||
0:1.2.7-1.redhat_00002.1.el10eap< * |
unaffected | ||
0:801.8.0-1.GA_redhat_00001.1.el10eap< * |
unaffected | ||
0:6.6.54-1.Final_redhat_00001.1.el10eap< * |
unaffected | ||
0:4.1.5-5.redhat_00008.1.el10eap< * |
unaffected | ||
| … +33 more rows | |||
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | 0:2.40.0-8.redhat_00024.1.el8eap< * |
unaffected |
0:4.1.7-1.SP1_redhat_00001.1.el8eap< * |
unaffected | ||
0:2.0.5-1.Final_redhat_00001.1.el8eap< * |
unaffected | ||
0:1.85.0-1.redhat_00001.1.el8eap< * |
unaffected | ||
0:1.2.7-1.redhat_00002.1.el8eap< * |
unaffected | ||
0:801.8.0-1.GA_redhat_00001.1.el8eap< * |
unaffected | ||
0:6.6.54-1.Final_redhat_00001.1.el8eap< * |
unaffected | ||
0:4.1.5-5.redhat_00008.1.el8eap< * |
unaffected | ||
| … +33 more rows | |||
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | 0:2.40.0-8.redhat_00024.1.el9eap< * |
unaffected |
0:4.1.7-1.SP1_redhat_00001.1.el9eap< * |
unaffected | ||
0:2.0.5-1.Final_redhat_00001.1.el9eap< * |
unaffected | ||
0:1.85.0-1.redhat_00001.1.el9eap< * |
unaffected | ||
0:1.2.7-1.redhat_00002.1.el9eap< * |
unaffected | ||
0:801.8.0-1.GA_redhat_00001.1.el9eap< * |
unaffected | ||
0:6.6.54-1.Final_redhat_00001.1.el9eap< * |
unaffected | ||
0:4.1.5-5.redhat_00008.1.el9eap< * |
unaffected | ||
| … +33 more rows | |||
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | any |
affected |
| Red Hat | Red Hat Single Sign-On 7 | any |
affected |
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I. Basic Information for CVE-2026-14180
Vulnerability Information
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Vulnerability Title
Undertow-core: undertow:http request smuggling via oversized chunk-size bit overlap
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Undertow 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Undertow是美国Undertow组织开源的一个Web服务器。 Undertow存在输入验证错误漏洞，该漏洞源于ChunkReader组件中的解析器使用单个内部变量存储剩余块大小和状态标志，攻击者通过发送特制请求的超大块大小导致这些值重叠，诱使解析器误认为请求已提前完成，可能导致第二个“夹带”请求被不同步处理，从而绕过安全控制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.40.0-8.redhat_00024.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.1.7-1.SP1_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.0.5-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:1.85.0-1.redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:1.2.7-1.redhat_00002.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:801.8.0-1.GA_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:6.6.54-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.1.5-5.redhat_00008.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.0.22-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.18.9-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.0.5-1.redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.0.7-4.redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.1.0-1.redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.6.3-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:5.0.31-1.SP2_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.1.0-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.2.0-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:7.4.0-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.0.1-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:5.1.0-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.0.11-2.SP1_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:2.25.4-1.redhat_00003.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:3.2.2-1.redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 | 0:4.1.136-1.Final_redhat_00001.1.el10eap ~ * |
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el10
|
|
II. Public POCs for CVE-2026-14180
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-14180 (6)
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🔗 2494771 – (CVE-2026-14180) CVE-2026-14180 undertow-core: Undertow:HTTP request smuggling via oversized chunk-size bit overlap issue-tracking x_refsource_REDHAT
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🔗 RHSA-2026:70230 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
Same Patch Batch · Red Hat · 2026-08-11 · 29 CVEs total
| CVE-2026-10579 | 9.8 CRITICAL | Picketlink-federation: auth bypass in picketlink saml unsolicited-response |
| CVE-2026-19546 | 8.8 HIGH | Dbi: incomplete fix for cve-2026-14380 dbi: arbitrary code execution via caller-influenced |
| CVE-2026-15555 | 8.8 HIGH | Jboss-marshalling-river: wildfly-clustering-infinispan-marshalling: jboss deserialization |
| CVE-2026-19550 | 8.2 HIGH | Freeipa: ipa: freeipa: trust-fetch-domains uses trust-read aci to gate a privileged ad tru |
| CVE-2026-15556 | 8.1 HIGH | Picketlink-federation: picketlink saml 2.0 auth bypass via missing assertions |
| CVE-2026-15560 | 8.1 HIGH | Openjdk-orb: unauthed class loading via iiop in eap |
| CVE-2026-72693 | 7.8 HIGH | Kbd: local privilege escalation in openvt via incorrect process owner verification allowin |
| CVE-2026-15565 | 7.5 HIGH | Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serveren |
| CVE-2026-71467 | 7.5 HIGH | Acm-search-v2-api-rhel9: search-v2-api: authentication bypass on /federated via upgrade: w |
| CVE-2026-71217 | 7.5 HIGH | Iperf3: iperf3 server accepts unbounded peer-controlled json parameters enabling remote de |
| CVE-2026-15567 | 7.5 HIGH | Wildfly: wildfly-iiop: wildfly-jacorb: wildfly: pre-auth denial of service on the iiop lis |
| CVE-2026-15562 | 7.5 HIGH | Jboss-remoting: jboss-remoting: integer overflow in messagereader leads to pre-authenticat |
| CVE-2026-15561 | 7.5 HIGH | Undertow-core: oom via missing limits in chunked trailer in eap's undertow |
| CVE-2026-15563 | 7.4 HIGH | Wildfly-iiop-openjdk: missing authentication on eap's iiop nameservice leads to mitm or do |
| CVE-2026-15554 | 7.4 HIGH | Undertow-core: undertow: authentication bypass via ajp ssl_cert/is_ssl forgery |
| CVE-2026-50237 | 7.4 HIGH | Openshift/console: namespace tenant ssrf with egress bypass, catalog poisoning, and admin- |
| CVE-2026-50236 | 7.4 HIGH | Openshift/console: authenticated ssrf with full response reflection and path neutralizatio |
| CVE-2026-72694 | 7.1 HIGH | Mrtg: mrtg daemon symlink-following chown allows local privilege escalation via pid file p |
| CVE-2026-71474 | 7.1 HIGH | Insights-client-rhel9: insights-client: pull-secret bearer token written to logs on non-20 |
| CVE-2026-71475 | 6.8 MEDIUM | Insights-client-rhel9: insights-client: spoke-controlled clusterid injected unencoded into |
Showing top 20 of 29 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-14180
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