NCSC-2026-0177

Vulnerability from csaf_ncscnl - Published: 2026-06-08 08:23 - Updated: 2026-06-08 08:23
Summary
Kwetsbaarheden verholpen in IBM WebSphere Application Server en WebSphere Liberty
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: IBM heeft kwetsbaarheden verholpen in WebSphere Application Server en WebSphere Liberty versies 8.5 en 9.0.
Interpretaties: De kwetsbaarheden bevinden zich in de Web Server Plug-ins die onderdeel zijn van de request handling processen van deze producten. De eerste kwetsbaarheid betreft HTTP request smuggling, waarbij speciaal opgemaakte HTTP-verzoeken worden gebruikt om beveiligingscontroles te omzeilen of de normale verwerking van HTTP-verzoeken te verstoren. De tweede kwetsbaarheid betreft remote code execution, waarbij een aanvaller door het versturen van speciaal opgemaakte verzoeken naar de plug-ins op afstand willekeurige code kan uitvoeren. Beide kwetsbaarheden richten zich op kritieke componenten die verantwoordelijk zijn voor de communicatie met de webserver binnen deze IBM-producten.
Oplossingen: IBM heeft updates uitgebracht om de kwetsbaarheden in WebSphere Application Server en WebSphere Liberty te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CVE-2026-8620

IBM WebSphere Application Server and WebSphere Liberty versions 8.5 and 9.0 are susceptible to HTTP request smuggling attacks through specially crafted requests targeting the Web Server Plug-ins.

7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty
 vers:unknown/*
vers:unknown/*
IBM / WebSphere Application Server
 vers:unknown/*
vers:unknown/*
IBM / WebSphere Remote Server
 vers:unknown/*
CVE-2026-8633

IBM WebSphere Application Server and WebSphere Liberty versions 8.5 and 9.0 contain a remote code execution vulnerability in their Web Server Plug-ins triggered by specially crafted requests.

9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Affected products
Product Identifier Version Remediation
vers:unknown/*
IBM / Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty
 vers:unknown/*
vers:unknown/*
IBM / WebSphere Application Server
 vers:unknown/*
vers:unknown/*
IBM / WebSphere Remote Server
 vers:unknown/*
References
To clipboard 

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        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.