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Security Bulletin: A security vulnerability has been identified in IBM HTTP Server shipped with IBM Rational ClearCase [CVE-2023-26281]

Security Bulletin


IBM HTTP Server (IHS) is shipped as a component of IBM Rational ClearCase. Information about a security vulnerability affecting IHS has been published in a security bulletin. [CVE-2023-26281]

Vulnerability Details

Refer to the security bulletin(s) listed in the Remediation/Fixes section

Affected Products and Versions

Affected Product(s)Version(s)
IBM Rational ClearCase10.0.0
IBM Rational ClearCase9.1
IBM Rational ClearCase9.0.2


Refer to the following security bulletin(s) for vulnerability details and information about fixes addressed by IBM WebSphere Application Server (WAS) which is shipped with IBM Rational ClearCase.

Principal Product and Version(s)Affected Supporting Product and VersionAffected Supporting Product Security Bulletin


IBM Rational ClearCase, versions 10.0.x, 9.1.x, 9.0.2.x


IBM HTTP Server version 8.5

ClearCase Versions
Applying the fix
10.0.x, 9.1.x, 9.0.2.xApply the appropriate IBM HTTP Server fix (see bulletin link above) directly to your CCRC WAN server host. No ClearCase-specific steps are necessary.

For 9.0.1.x and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.

Workarounds and Mitigations


Get Notified about Future Security Bulletins



Change History

28 Mar 2023: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location


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Document Information

Modified date:
28 March 2023