CVE-2026-61718 bunkerweb: Read-only Web UI users can delete job cache files due to missing authorization on /cache/ routes
Read-only users can delete critical WAF cache files due to missing authorization checks on cache routes, impacting data integrity.
- 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-2026-61718?
CVE-2026-61718 is a medium-severity missing authorization vulnerability in bunkerity bunkerweb, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
bunkerweb is an Open-source and next-generation Web Application Firewall (WAF). From 1.6.2 until 1.6.12, the BunkerWeb web UI BiscuitMiddleware authorization bypass list included the /cache/ URL prefix, so routes in src/ui/app/routes/cache.py protected only by @login_required, including POST /cache/delete, allowed low-privilege read-only reader accounts to permanently delete job cache files containing blacklist, greylist, DNSBL, CrowdSec, GeoIP, ModSecurity CRS, Let's Encrypt, ACME, and custom configuration data. This issue is fixed in version 1.6.12.
Which versions are affected by CVE-2026-61718?
How do I fix CVE-2026-61718?
No fix has been published for CVE-2026-61718 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-61718 being exploited?
There is no known exploitation of CVE-2026-61718 in the wild and no public exploit code.
Sources
Also known as GHSA-q7rm-935c-v39g.