CVE-2026-8879
CVE-2026-8879
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
5th
Version 3.0.7 of the Securly Chrome Extension dynamically registers content13.min.js as a content script via chrome.scripting.registerContentScripts() at runtime. This script is NOT declared in manifest.json and bypasses Chrome Web Store static security review. It runs on all URLs and immediately hides all page content, creates a full-page overlay, pauses all videos, and only restores content when the service worker confirms the page passes filtering. If Securly's servers are unreachable, pages remain indefinitely hidden.
| Vendor | securly |
| Product | securly chrome extension |
| Published | Jun 3, 2026 |
| Last Updated | Jun 4, 2026 |
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Affected Versions
Securly / Securly Chrome Extension
0 ≤ 3.0.7