# 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.

- **Severity:** High 8.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **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 available:** No
- **Published:** 28 Jul 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-xp42-qr2q-c463

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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.

## Is CVE-2026-66918 being exploited?

There is no known exploitation of CVE-2026-66918 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-66918 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-66918 in the wild and no public exploit code.

Affected product: pivotick. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-66918/ (Markdown: https://insights.sbomify.com/CVE-2026-66918/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-66918
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-66918
- OSV: https://osv.dev/vulnerability/CVE-2026-66918

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-66918/
Summaries are generated and may contain mistakes; the official description above is the record.