Common Weakness Enumeration
CWE-444
AllowedInconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Abstraction: Base · Status: Incomplete
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
664 vulnerabilities reference this CWE, most recent first.
CVE-2026-24033 (GCVE-0-2026-24033)
Vulnerability from cvelistv5 – Published: 2026-07-29 07:22 – Updated: 2026-07-29 13:12
VLAI
EPSS
VEX
Title
Apache Traffic Server: Request smuggling via chunked extension quoted-string parsing
Summary
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Traffic Server.
This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3, from 9.0.0 through 9.2.14.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 13:12 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/5prl9glcm9g2swnq9… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server |
Affected:
10.0.0 , ≤ 10.1.3
(semver)
Affected: 9.0.0 , ≤ 9.2.14 (semver) |
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CVE-2026-23941 (GCVE-0-2026-23941)
Vulnerability from cvelistv5 – Published: 2026-03-13 09:11 – Updated: 2026-07-24 14:15
VLAI
EPSS
VEX
Title
Request smuggling via first-wins Content-Length parsing in inets httpd
Summary
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Erlang OTP (inets httpd module) allows HTTP Request Smuggling.
This vulnerability is associated with program files lib/inets/src/http_server/httpd_request.erl and program routines httpd_request:parse_headers/7.
The server does not reject or normalize duplicate Content-Length headers. The earliest Content-Length in the request is used for body parsing while common reverse proxies (nginx, Apache httpd, Envoy) honor the last Content-Length value. This violates RFC 9112 Section 6.3 and allows front-end/back-end desynchronization, leaving attacker-controlled bytes queued as the start of the next request.
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-13 16:00 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-23941.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-23941 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/a4b46336fd25… | patch |
| https://github.com/erlang/otp/commit/a761d391d8d0… | patch |
| https://github.com/erlang/otp/commit/e775a332f623… | patch |
Impacted products
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CVE-2026-23527 (GCVE-0-2026-23527)
Vulnerability from cvelistv5 – Published: 2026-01-15 19:24 – Updated: 2026-04-13 16:48
VLAI
EPSS
VEX
Title
h3 v1 has Request Smuggling (TE.TE) issue
Summary
H3 is a minimal H(TTP) framework built for high performance and portability. Prior to 1.15.5, there is a critical HTTP Request Smuggling vulnerability. readRawBody is doing a strict case-sensitive check for the Transfer-Encoding header. It explicitly looks for "chunked", but per the RFC, this header should be case-insensitive. This vulnerability is fixed in 1.15.5.
Severity
8.9 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-15 19:59 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/h3js/h3/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/h3js/h3/commit/618ccf4f37b8b61… | x_refsource_MISC |
| https://github.com/h3js/h3/releases/tag/v1.15.5 | x_refsource_MISC |
| https://simonkoeck.com/writeups/h3-transfer-encod… | x_refsource_MISC |
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"baseScore": 8.9,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
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"scope": "CHANGED",
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CVE-2026-20069 (GCVE-0-2026-20069)
Vulnerability from cvelistv5 – Published: 2026-03-04 17:51 – Updated: 2026-03-04 20:24
VLAI
EPSS
VEX
Title
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability
Summary
A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device.
This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by persuading a user to visit a website that is designed to pass malicious HTTP requests to a device that is running Cisco Secure Firewall ASA Software or Cisco Secure FTD Software and has web services endpoints supporting VPN features enabled. A successful exploit could allow the attacker to reflect malicious input from the affected device to the browser that is in use and conduct browser-based attacks, including cross-site scripting (XSS) attacks. The attacker is not able to directly impact the affected device.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-04 20:23 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software |
Affected:
9.12.3
Affected: 9.12.1 Affected: 9.12.2 Affected: 9.12.4 Affected: 9.12.3.2 Affected: 9.12.3.7 Affected: 9.12.2.5 Affected: 9.12.3.12 Affected: 9.12.1.3 Affected: 9.12.2.4 Affected: 9.12.1.2 Affected: 9.12.2.9 Affected: 9.12.3.9 Affected: 9.12.2.1 Affected: 9.12.4.2 Affected: 9.12.4.4 Affected: 9.12.4.7 Affected: 9.12.4.8 Affected: 9.12.4.10 Affected: 9.12.4.13 Affected: 9.12.4.18 Affected: 9.12.4.24 Affected: 9.16.1 Affected: 9.12.4.26 Affected: 9.16.1.28 Affected: 9.12.4.29 Affected: 9.16.2 Affected: 9.12.4.30 Affected: 9.16.2.3 Affected: 9.12.4.35 Affected: 9.16.2.7 Affected: 9.12.4.37 Affected: 9.17.1 Affected: 9.16.2.11 Affected: 9.16.2.13 Affected: 9.12.4.39 Affected: 9.12.4.38 Affected: 9.16.2.14 Affected: 9.17.1.7 Affected: 9.12.4.40 Affected: 9.16.3.3 Affected: 9.16.3 Affected: 9.16.3.14 Affected: 9.17.1.9 Affected: 9.12.4.41 Affected: 9.17.1.10 Affected: 9.18.1 Affected: 9.12.4.47 Affected: 9.16.3.15 Affected: 9.18.1.3 Affected: 9.17.1.11 Affected: 9.12.4.48 Affected: 9.18.2 Affected: 9.16.3.19 Affected: 9.17.1.13 Affected: 9.12.4.50 Affected: 9.17.1.15 Affected: 9.12.4.52 Affected: 9.16.3.23 Affected: 9.18.2.5 Affected: 9.16.4 Affected: 9.12.4.54 Affected: 9.17.1.20 Affected: 9.18.2.7 Affected: 9.19.1 Affected: 9.16.4.9 Affected: 9.12.4.55 Affected: 9.18.2.8 Affected: 9.16.4.14 Affected: 9.18.3 Affected: 9.19.1.5 Affected: 9.12.4.56 Affected: 9.17.1.30 Affected: 9.19.1.9 Affected: 9.18.3.39 Affected: 9.16.4.19 Affected: 9.12.4.58 Affected: 9.19.1.12 Affected: 9.18.3.46 Affected: 9.16.4.27 Affected: 9.19.1.18 Affected: 9.18.3.53 Affected: 9.18.3.55 Affected: 9.16.4.38 Affected: 9.17.1.33 Affected: 9.12.4.62 Affected: 9.16.4.39 Affected: 9.18.3.56 Affected: 9.20.1 Affected: 9.16.4.42 Affected: 9.19.1.22 Affected: 9.18.4 Affected: 9.20.1.5 Affected: 9.18.4.5 Affected: 9.19.1.24 Affected: 9.16.4.48 Affected: 9.18.4.8 Affected: 9.20.2 Affected: 9.19.1.27 Affected: 9.12.4.65 Affected: 9.16.4.55 Affected: 9.18.4.22 Affected: 9.20.2.10 Affected: 9.16.4.57 Affected: 9.19.1.28 Affected: 9.17.1.39 Affected: 9.12.4.67 Affected: 9.18.4.24 Affected: 9.20.2.21 Affected: 9.16.4.61 Affected: 9.19.1.31 Affected: 9.18.4.29 Affected: 9.20.2.22 Affected: 9.16.4.62 Affected: 9.18.4.34 Affected: 9.20.3 Affected: 9.16.4.67 Affected: 9.16.4.70 Affected: 9.18.4.40 Affected: 9.23.1 Affected: 9.22.1.1 Affected: 9.16.4.71 Affected: 9.20.3.4 Affected: 9.18.4.47 Affected: 9.20.3.7 Affected: 9.17.1.45 Affected: 9.19.1.37 Affected: 9.17.1.46 Affected: 9.16.4.76 Affected: 9.20.3.9 Affected: 9.19.1.38 Affected: 9.18.4.50 Affected: 9.22.1.3 Affected: 9.20.3.10 Affected: 9.22.1.2 Affected: 9.18.4.52 Affected: 9.20.3.13 Affected: 9.22.1.6 Affected: 9.18.4.53 Affected: 9.16.4.82 Affected: 9.22.2 Affected: 9.20.3.16 Affected: 9.19.1.42 Affected: 9.18.4.57 Affected: 9.16.4.84 Affected: 9.23.1.3 Affected: 9.20.3.20 Affected: 9.22.2.4 Affected: 9.23.1.7 Affected: 9.20.4 Affected: 9.22.2.9 |
|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
6.4.0.1
Affected: 6.4.0.2 Affected: 6.4.0.5 Affected: 6.4.0 Affected: 6.4.0.3 Affected: 6.4.0.4 Affected: 6.4.0.6 Affected: 6.4.0.7 Affected: 6.4.0.8 Affected: 6.4.0.9 Affected: 6.4.0.10 Affected: 6.4.0.11 Affected: 6.4.0.12 Affected: 7.0.0 Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.1.0 Affected: 6.4.0.13 Affected: 7.0.1.1 Affected: 6.4.0.14 Affected: 7.1.0.1 Affected: 7.0.2 Affected: 6.4.0.15 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.1.0.2 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 6.4.0.16 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.1.0.3 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 6.4.0.17 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 6.4.0.18 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 |
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CVE-2026-19203 (GCVE-0-2026-19203)
Vulnerability from cvelistv5 – Published: 2026-09-08 12:08 – Updated: 2026-09-08 14:21
VLAI
EPSS
VEX
Summary
A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty and an intermediary proxy to interpret different request boundaries, potentially resulting in HTTP request smuggling.
This is caused by Jetty accepting a lone LF character as a terminator in parts of chunked request parsing. Depending on the Jetty version and configured HTTP compliance mode, this may occur in chunk extensions, chunk data termination, or trailer termination.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 14:21 UTC
CWE
- CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse Jetty |
Affected:
12.1.0 , ≤ 12.1.11
(semver)
Affected: 12.0.0 , ≤ 12.0.37 (semver) Affected: 11.0.0 , ≤ 11.0.31 (semver) Affected: 10.0.0 , ≤ 10.0.31 (semver) Affected: 9.4.0 , ≤ 9.4.63 (semver) |
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CVE-2026-18540 (GCVE-0-2026-18540)
Vulnerability from cvelistv5 – Published: 2026-09-04 17:15 – Updated: 2026-09-04 17:50
VLAI
EPSS
VEX
Title
undici vulnerable to downstream response splitting via retry interceptor
Summary
undici's retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response's status and headers. This happens when an upstream server delivers part of a body without a trustworthy resume checkpoint, for example a non-success response whose headers were already sent or a partial-content response with an unusable content range, then closes the connection and answers the resumed range request with more bytes. As a result the response body can be longer than the Content-Length that the application observes. An application that relays such a response to a downstream HTTP/1.1 peer without normalizing the framing can emit a body that exceeds the forwarded Content-Length, and the excess bytes can be interpreted as the start of a following response, which enables downstream response splitting or desynchronization. Exploitation requires an attacker-controlled upstream server and an application that forwards the response through a framing-sensitive path. This affects undici versions before 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 17:50 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
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CVE-2026-16728 (GCVE-0-2026-16728)
Vulnerability from cvelistv5 – Published: 2026-07-29 20:59 – Updated: 2026-07-30 15:18
VLAI
EPSS
VEX
Title
undici vulnerable to downstream response desynchronization via retry interceptor
Summary
undici's retry interceptor can deliver a response whose body length does not match the Content-Length header exposed to the application after a retry or resume of a partial response. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, a malicious or faulty upstream can return a partial response with a mismatched framing header, close the socket early, and have the retry interceptor assemble a body of a different length while the original Content-Length stays attached. Applications that use the retry interceptor and forward upstream headers and bodies downstream, such as proxies or gateways, may then emit an invalid HTTP response with a stale Content-Length, leading to downstream response desynchronization, connection hangs, or response corruption. Exploitation requires the retry interceptor enabled, an upstream returning a mismatched partial response, and a downstream forwarder that does not remove or recalculate Content-Length. The issue is fixed in undici 6.28.0, 7.29.0, and 8.9.0.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:20 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
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CVE-2026-15634 (GCVE-0-2026-15634)
Vulnerability from cvelistv5 – Published: 2026-09-14 20:01 – Updated: 2026-09-15 17:31
VLAI
EPSS
VEX
Title
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Summary
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty are vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP transfer-encoding request header. By sending a specially crafted HTTP transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 17:21 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7286610 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | WebSphere Application Server |
Affected:
9.0
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CVE-2026-15396 (GCVE-0-2026-15396)
Vulnerability from cvelistv5 – Published: 2026-09-14 20:08 – Updated: 2026-09-15 14:37
VLAI
EPSS
VEX
Title
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Summary
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty are vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP transfer-encoding request header. By sending a specially crafted HTTP transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:37 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7286610 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | WebSphere Application Server |
Affected:
9.0
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CVE-2026-15328 (GCVE-0-2026-15328)
Vulnerability from cvelistv5 – Published: 2026-07-28 20:04 – Updated: 2026-07-30 03:55
VLAI
EPSS
VEX
Title
IBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP Requests
Summary
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP request smuggling.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 00:00 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7281625 | vendor-advisorypatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | WebSphere Application Server |
Affected:
9.0
Affected: 8.5 cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:* |
|
| IBM | WebSphere Application Server - Liberty |
Affected:
17.0.0.3 , ≤ 26.0.0.7
(semver)
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"cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*",
"cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.7:*:*:*:*:*:*:*"
],
"product": "WebSphere Application Server - Liberty",
"vendor": "IBM",
"versions": [
{
"lessThanOrEqual": "26.0.0.7",
"status": "affected",
"version": "17.0.0.3",
"versionType": "semver"
}
]
}
],
"descriptions": [
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"value": "\u003cp\u003eIBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP request smuggling.\u003c/p\u003e"
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],
"value": "IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP request smuggling."
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],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
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]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-444",
"description": "CWE-444 Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T20:06:38.659Z",
"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
"shortName": "ibm"
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"references": [
{
"tags": [
"vendor-advisory",
"patch"
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"url": "https://www.ibm.com/support/pages/node/7281625"
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"solutions": [
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"value": "\u003cp\u003eIBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH72191 or PH72192. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to\u00a0\u003ca href=\"https://www.ibm.com/support/pages/node/6553910\" rel=\"nofollow\"\u003eHow to determine if Liberty is using a specific feature\u003c/a\u003e. \u00a0\u003c/p\u003e\u003cdiv\u003e\u003cp\u003e\u003cstrong\u003eFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.7 using servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1\u00a0 feature(s):\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves \u003ca href=\"https://www.ibm.com/support/pages/node/7277460?PH72191b\" rel=\"nofollow\"\u003ePH72191\u003c/a\u003e\u003cbr/\u003e--OR--\u003cbr/\u003e\u00b7 Apply Fix Pack 26.0.0.8 or later (targeted availability 3Q2026).\u003c/p\u003e\u003c/div\u003e\u003cp\u003e\u003cstrong\u003eFor IBM WebSphere Application Server traditional:\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V9.0.0.0 through 9.0.5.28:\u003c/strong\u003e\u003cbr/\u003e\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves \u003ca href=\"https://www.ibm.com/support/pages/node/7281143\" rel=\"nofollow\"\u003ePH72192\u003c/a\u003e\u003cbr/\u003e--OR--\u003cbr/\u003e\u00b7 Apply Fix Pack 9.0.5.29 or later (targeted availability 3Q2026).\u00a0\u00a0\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V8.5.0.0 through 8.5.5.30:\u003c/strong\u003e\u003cbr/\u003e\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves \u003ca href=\"https://www.ibm.com/support/pages/node/7281143\" rel=\"nofollow\"\u003ePH72192\u003c/a\u003e\u003cbr/\u003e--OR--\u003cbr/\u003e\u00b7 Apply Fix Pack 8.5.5.31 or later (targeted availability 3Q2026).\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eAdditional interim fixes may be available and linked off the interim fix download page.\u003c/p\u003e"
}
],
"value": "IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH72191 or PH72192. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to\u00a0 How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 . \u00a0\n\n\n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.7 using servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1\u00a0 feature(s):\n\n\n\n\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH72191 https://www.ibm.com/support/pages/node/7277460 \n--OR--\n\u00b7 Apply Fix Pack 26.0.0.8 or later (targeted availability 3Q2026).\n\n\n\n\n\nFor IBM WebSphere Application Server traditional:\n\n\n\nFor V9.0.0.0 through 9.0.5.28:\n\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH72192 https://www.ibm.com/support/pages/node/7281143 \n--OR--\n\u00b7 Apply Fix Pack 9.0.5.29 or later (targeted availability 3Q2026).\u00a0\u00a0\n\n\n\nFor V8.5.0.0 through 8.5.5.30:\n\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves PH72192 https://www.ibm.com/support/pages/node/7281143 \n--OR--\n\u00b7 Apply Fix Pack 8.5.5.31 or later (targeted availability 3Q2026).\n\n\n\n\n\n\n\nAdditional interim fixes may be available and linked off the interim fix download page."
}
],
"title": "IBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP Requests",
"x_generator": {
"engine": "ibm-cvegen"
}
}
},
"cveMetadata": {
"assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
"assignerShortName": "ibm",
"cveId": "CVE-2026-15328",
"datePublished": "2026-07-28T20:04:41.632Z",
"dateReserved": "2026-07-09T18:20:49.634Z",
"dateUpdated": "2026-07-30T03:55:30.946Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
Use a web server that employs a strict HTTP parsing procedure, such as Apache [REF-433].
Mitigation
Implementation
Use only SSL communication.
Mitigation
Implementation
Terminate the client session after each request.
Mitigation
System Configuration
Turn all pages to non-cacheable.
CAPEC-273: HTTP Response Smuggling
An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server).
See CanPrecede relationships for possible consequences.
CAPEC-33: HTTP Request Smuggling
An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server).
See CanPrecede relationships for possible consequences.