Resource exhaustion in Gorhill Ublock Origin
CVE-2025-4215
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Gorhill Ublock Origin — versions 1.63.3b16
- Ublockorigin Ublock_origin — versions 1.63.3
- Debian Debian_linux — versions 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (Exploit, Patch, patch)
- cna@vuldb.com (Release Notes, patch)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
Frequently asked questions
- What is CVE-2025-4215?
- CVE-2025-4215 is a low-severity vulnerability in Gorhill Ublock Origin, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2025-05-02.
- How severe is CVE-2025-4215?
- Low severity. CVSS v3 base score is 3.1 out of 10.
- Is CVE-2025-4215 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.