A vulnerability was found in gorhill uBlock Origin up to 1.63.3b16. It has been classified as problematic. Affected is the function currentStateChanged of the file src/js/1p-filters.js of the component UI. The manipulation leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.63.3b17 is able to address this issue. The patch is identified as eaedaf5b10d2f7857c6b77fbf7d4a80681d4d46c. It is recommended to upgrade the affected component.
The product does not properly control the allocation and maintenance of a limited resource.
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
| Link | Tags |
|---|---|
| https://vuldb.com/?id.307194 | third party advisory technical description vdb entry |
| https://vuldb.com/?ctiid.307194 | permissions required vdb entry signature |
| https://vuldb.com/?submit.562301 | third party advisory vdb entry |
| https://github.com/gorhill/uBlock/commit/eaedaf5b10d2f7857c6b77fbf7d4a80681d4d46c | exploit patch |
| https://github.com/gorhill/uBlock/releases/tag/1.63.3b17 | release notes patch |
| https://lists.debian.org/debian-lts-announce/2025/06/msg00013.html | mailing list |