Openwrt Luci App Adblock Fast vulnerabilities

1 vulnerability

Known vulnerabilities in Openwrt Luci App Adblock Fast, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

8.8CVE-2026-55159openwrtluci-app-adblock-fast
EPSS score
0.49%
luci-app-adblock-fast a WebUI for fast, lightweight DNS-based ad-blocker for OpenWrt that works with dnsmasq, smartdns, or unbound. Prior to 1.2.4-2, the luci.adblock-fast.setCronEntry RPC method accepts an entry argument containing carriage-return or line-feed characters and serializes it into /etc/crontabs/root as though it were one logical line. An authenticated delegated user with the luci-app-adblock-fast write ACL can therefore create an additional physical root cron entry through applications/luci-app-adblock-fast/root/usr/share/rpcd/ucode/luci.adblock-fast, resulting in persistent command execution as UID 0 when cron runs. The issue is not demonstrated for unauthenticated callers or users without the component write ACL. This vulnerability is fixed in 1.2.4-2.