CVE-2026-108980 Path traversal in Blinko
Authenticated attackers can exploit path traversal in plugin installation to overwrite root-owned files and achieve remote code execution as root.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108980?
CVE-2026-108980 is a high-severity path traversal vulnerability in Blinko, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Blinko through 1.8.8 allows directory traversal, overwriting startup files as root, via installPlugin. It builds the plugin install path from an unsanitized name in server/routerTrpc/plugin.ts, and the plugin.installPlugin tRPC procedure is open to any authenticated user. Thus, a name containing ../ sequences writes the downloaded plugin files outside the plugins directory. Because the official Docker image runs as root, an authenticated attacker overwrites a root-owned startup file and achieves remote code execution as root. Self-registration for an account may be possible.
Weakness: CWE-24
Which versions are affected by CVE-2026-108980?
How do I fix CVE-2026-108980?
No fix has been published for CVE-2026-108980 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-108980 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108980 exists.
Sources
Also known as GHSA-q62g-66hr-78pq.