SB2026102820 - Multiple vulnerabilities in IBM InfoSphere Optim Archive Viewer

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Main Vulnerability Database SB2026102820

SB2026102820 - Multiple vulnerabilities in IBM InfoSphere Optim Archive Viewer

Published: October 28, 2026

Security Bulletin ID SB2026102820
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) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-65904)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary script in the parent document.

The vulnerability exists due to improper check for unusual or exceptional conditions in the IN_PLACE sanitization path when sanitizing a DOM element originating from a different window or realm. A remote attacker can cause the application to sanitize a crafted cross-window DOM element with IN_PLACE enabled to execute arbitrary script in the parent document.

Only the IN_PLACE DOM node path is affected. Exploitation requires the application to pass an element from a different window object, such as a same-origin iframe or opened window, and then render that element into the main document after sanitization.


2) Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CVE-ID: CVE-2026-65911)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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


The vulnerability allows a remote attacker to execute arbitrary script in the victim's browser.

The vulnerability exists due to improper neutralization of input during web page generation in DOMPurify sanitize() configuration handling when reusing a shared DOMPurify instance across sanitize() calls with ADD_ATTR or ADD_TAGS supplied first as a function predicate and later as an array. A remote attacker can submit crafted HTML to trigger stale predicate state and execute arbitrary script in the victim's browser.

The issue can bypass explicit FORBID_TAGS settings and affects cases where a shared instance is used across different sanitization contexts.


Remediation

Install update from vendor's website.

References