SB2026070317 - Multiple vulnerabilities in IBM Power Hardware Management Console (HMC)

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Main Vulnerability Database SB2026070317

SB2026070317 - Multiple vulnerabilities in IBM Power Hardware Management Console (HMC)

Published: July 3, 2026

Security Bulletin ID SB2026070317
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2026-41293)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to trigger unexpected application behavior.

The vulnerability exists due to improper input validation in HTTP/2 request header handling when exposing header values through the Servlet API. A remote attacker can send crafted HTTP/2 request headers to trigger unexpected application behavior.

This may affect applications that assume header values exposed through the Servlet API are specification compliant.


2) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2026-24880)

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform request smuggling.

The vulnerability exists due to improper input validation in HTTP/1.1 chunk extension handling when parsing chunked requests. A remote attacker can send a specially crafted request with an invalid chunk extension to perform request smuggling.

Exploitation requires a reverse proxy in front of Tomcat that allows CRLF sequences in an otherwise valid chunk extension.


Remediation

Install update from vendor's website.

References