CVE-2026-105987 Stored XSS in KGS Software tia Viewer
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-105987?
CVE-2026-105987 is a medium-severity vulnerability in KGS Software tia Viewer, published on 27 Oct 2026.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-105987?
How do I fix CVE-2026-105987?
No fix has been published for CVE-2026-105987 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-105987 being exploited?
There is no known exploitation of CVE-2026-105987 in the wild and no public exploit code.
Sources
Also known as GHSA-52vr-mm4v-p8xx.