CVE-2026-101156 Security Advisory 0192
An authenticated administrator can inject malicious scripts into configurations, allowing them to access sensitive data or modify settings in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-101156?
CVE-2026-101156 is a medium-severity cross-site scripting vulnerability in Arista Networks CloudVision CUE, published on 6 Oct 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A stored cross-site scripting (XSS) vulnerability may allow an authenticated, high-privilege administrator to store malicious content in a configuration. The content may execute in another authenticated user's browser when that user views or compares the affected configuration. Successful exploitation may allow the attacker to act through the victim's authenticated browser session to access sensitive data, modify configurations, or disrupt managed wireless services.
Weakness: CWE-79
Which versions are affected by CVE-2026-101156?
How do I fix CVE-2026-101156?
No fix has been published for CVE-2026-101156 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-2026-101156 being exploited?
There is no known exploitation of CVE-2026-101156 in the wild and no public exploit code.
Sources
Also known as GHSA-5f8p-q6pp-92x2.