SB20260114123 - IBM Concert Software update for React Server Components

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Main Vulnerability Database SB20260114123

SB20260114123 - IBM Concert Software update for React Server Components

Published: January 14, 2026 Updated: April 17, 2026

Security Bulletin ID SB20260114123
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Deserialization of untrusted data (CVE-ID: CVE-2025-55182)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

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


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data passed to React Server Function endpoints. A remote non-authenticated attacker can send a specially crafted HTTP request to the React server components and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References