SB2026102707 - IBM Db2 Developer Extension update for fast-uri

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Main Vulnerability Database SB2026102707

SB2026102707 - IBM Db2 Developer Extension update for fast-uri

Published: October 27, 2026

Security Bulletin ID SB2026102707
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Handling of Case Sensitivity (CVE-ID: CVE-2026-86472)

CWE-ID: CWE-178 - Improper Handling of Case Sensitivity

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass host allowlist or denylist checks.

The vulnerability exists due to improper handling of case sensitivity in the fast-uri host parsing, normalization, and equality functions when processing scheme-relative references containing percent-encoded uppercase unreserved host octets. A remote attacker can supply a crafted scheme-relative URL to bypass host allowlist or denylist checks.

The evading hostname resolves and routes to the same host intended to be restricted.


Remediation

Install update from vendor's website.

References