SB2026100615 - IBM Informix Dynamic Server update for Hono

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Main Vulnerability Database SB2026100615

SB2026100615 - IBM Informix Dynamic Server update for Hono

Published: October 6, 2026

Security Bulletin ID SB2026100615
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Inefficient regular expression complexity (CVE-ID: CVE-2026-69207)

CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient regular expression complexity in the built-in CORS middleware when processing the Access-Control-Request-Headers header during a CORS preflight request. A remote attacker can send a specially crafted OPTIONS request with a long whitespace sequence in the header value to cause a denial of service.

Only applications using cors() with the default or an empty allowHeaders setting reach the affected code path.


Remediation

Install update from vendor's website.

References