CVE-2026-66918 DOM-Based Cross-Site Scripting via Unsanitized SVG Node Icons
Attacker can execute arbitrary JavaScript via unsanitized SVG icons in Pivotick, potentially stealing data or hijacking sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-66918?
CVE-2026-66918 is a high-severity cross-site scripting vulnerability in pivotick, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Pivotick fails to sanitize attacker-controlled SVG markup supplied through the per-node style.svgIcon property before inserting it into the document.
When rendering a graph node, the vulnerable code assigns the SVG icon markup directly to the innerHTML property of a live SVG element. An attacker able to influence graph data can provide crafted markup containing executable event handlers, such as an <image> element with an onerror attribute.
When a victim loads or renders the malicious graph, the payload may execute arbitrary JavaScript in the security context of the application embedding Pivotick. Successful exploitation could allow the attacker to access application data available to the victim, modify displayed content, or perform actions using the victim’s authenticated session.
Exploitation requires an application using Pivotick to render graph data that is controlled or modified by an attacker.
Weakness: CWE-79
Which versions are affected by CVE-2026-66918?
How do I fix CVE-2026-66918?
No fix has been published for CVE-2026-66918 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-66918 being exploited?
There is no known exploitation of CVE-2026-66918 in the wild and no public exploit code.
Sources
Also known as GHSA-xp42-qr2q-c463.