CVE-2026-68583 luci-app-adblock-fast before 1.2.4-4 Stored XSS via file_url.name
Lower-privileged users can inject HTML into blocklist names, executing scripts in administrators' browsers via the AdBlock Fast status page.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-68583?
CVE-2026-68583 is a medium-severity cross-site scripting vulnerability in openwrt luci, published on 2 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
luci-app-adblock-fast before 1.2.4-4 contains a stored cross-site scripting vulnerability in the blocklist name field that allows lower-privileged users to inject active HTML. When an administrator views the AdBlock Fast status page, the injected payload executes in the administrator's browser under the LuCI origin.
Weakness: CWE-79
Which versions are affected by CVE-2026-68583?
How do I fix CVE-2026-68583?
No fix has been published for CVE-2026-68583 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-2026-68583 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-68583 exists.
Sources
Also known as GHSA-vh6j-2jxw-848c.