CVE-2026-106107 Quasar Framework: App Vite SSR and SSG nonce attributes are not safely constrained
Attackers can inject malicious HTML attributes into SSR/SSG output if the nonce value is attacker-controlled, leading to XSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-106107?
CVE-2026-106107 is a high-severity cross-site scripting vulnerability in @quasar app-vite, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 3.3.0, several @quasar/app-vite SSR and SSG rendering paths interpolated ssrContext.nonce directly into quoted HTML attributes. An application that derives or overrides this value with attacker-controlled data can allow a quote to terminate the nonce attribute and inject additional attributes or markup into generated HTML across development and production SSR or SSG output. Cryptographically generated base64 or base64url nonces are not affected because they lack HTML attribute delimiters. This issue is fixed in version 3.3.0.
Which versions are affected by CVE-2026-106107?
2 open source packages ship an affected version, including @quasar/app-vite.
| Package | Affected | Fixed in |
|---|---|---|
@quasar/app-vite npm | All versions | 3.3.0 |
@quasar/app-vite npm | All versions | 3.3.0 |
How do I fix CVE-2026-106107?
Upgrade @quasar/app-vite to 3.3.0 or later.
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-2026-106107 being exploited?
There is no known exploitation of CVE-2026-106107 in the wild and no public exploit code.
Sources
Also known as GHSA-5m6h-8g35-p3m7.