CVE-2026-105987

MEDIUM 5.1CVE-2026-105987 · Published 27/10/2026 · updated 04/11/2026

In short

CVE-2026-105987 is a MEDIUM (CVSS 5.1) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.24%, higher than 15.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

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.

References

cert.pl/en/posts/2026/10/CVE-2026-105987
kgs-software.com/en/products/tia-viewer

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free