Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| gorhill | uBlock Origin | 1.63.3b16 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ublock-origin | 1.62.0+dfsg-2 | — |
| Debian 13 | ublock-origin | 1.62.0+dfsg-2 | — |
| Debian 12 | ublock-origin | 1.62.0+dfsg-0+deb12u1 | — |
| Debian 11 | ublock-origin | 1.62.0+dfsg-0+deb11u1 | DLA-4215-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | ublock-origin | No fix yet | — |
| Ubuntu 22.04 LTS | ublock-origin | No fix yet | — |
| Ubuntu 20.04 LTS | ublock-origin | No fix yet | — |
| Ubuntu 18.04 LTS | ublock-origin | No fix yet | — |
| Ubuntu 16.04 LTS | ublock-origin | No fix yet | — |
Advisories 1
- DLA-4215-1 ublock-origin - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- VDB-307194 | gorhill uBlock Origin UI 1p-filters.js currentStateChanged redos vdb-entry technical-description
- VDB-307194 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- Submit #562301 | uBlock @gorhill/ubo-core >=npm_0.1.11 Inefficient Regular Expression Complexity third-party-advisory
- https://github.com/gorhill/uBlock/commit/eaedaf5b10d2f7857c6b77fbf7d4a80681d4d46c patch
- https://github.com/gorhill/uBlock/releases/tag/1.63.3b17 patch