CVE-2026-35466 Stored XSS via unsanitized input from remote service
Attackers can inject malicious HTML via unsanitized CVE API responses, leading to stored XSS in the cveInterface.js library.
- 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-2026-35466?
CVE-2026-35466 is a medium-severity cross-site scripting vulnerability in CERT/CC cveClient/cveInterface.js, published on 2 Apr 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
XSS vulnerability in cveInterface.js allows for inject HTML to be passed to display, as cveInterface trusts input from CVE API services
Weakness: CWE-79
Which versions are affected by CVE-2026-35466?
It affects 1 product.
Products include Cmu Cveclient.
How do I fix CVE-2026-35466?
No fix has been published for CVE-2026-35466 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-2026-35466 being exploited?
There is no known exploitation of CVE-2026-35466 in the wild and no public exploit code.
Other vulnerabilities in CERT/CC cveClient/cveInterface.js
Sources
Also known as GHSA-c5mh-66wj-fpf7.