CVE-2026-105987 Details
Description
KGS Software tia Viewer is vulnerable to Stored XSS via the annotation API. Due to the lack of input validation, an authenticated attacker can inject arbitrary JavaScript payload into a stickynote annotation. When any user opens the document, the viewer renders the annotation and the browser executes the payload. This may lead to compromising the user's session. This issue has been fixed in version 1.2.8.
A stored cross-site scripting vulnerability has been identified in KGS Software tia Viewer, affecting all versions prior to 1.2.8. The issue arises from inadequate input validation in the annotation API, allowing authenticated attackers to inject arbitrary JavaScript into stickynote annotations. When a user opens the document, the viewer displays the annotation, and the browser executes the injected script, potentially compromising the user's session.
Users can upgrade to KGS Software tia Viewer version 1.2.8 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 27, 2026CISA-ADP
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert.pl/en/posts/2026/10/CVE-2026-105987 | [email protected] | AdvisoryRemedy |
| https://www.kgs-software.com/en/products/tia-viewer | [email protected] | ProductVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| KGS Software tia Viewer | < 1.2.8 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 4, 2026 | CVE Modified | CISA-ADP |
| Oct 27, 2026 | New CVE Received | [email protected] |
Volerion