CVE-2026-55159 luci-app-adblock-fast - Command Injection

luci-app-adblock-fast < 1.2.4-2 contains a command injection caused by improper handling of carriage-return or line-feed characters in the setCronEntry RPC method, letting authenticated delegated users with write ACL execute persistent commands as root, exploit requires write ACL.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
21 September 2026
Updated
15 October 2026
Weakness
CWE-93

Vendor fix

Update to version 1.2.4-2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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