๐Ÿ›ก๏ธ CVE-2026-8879
๐ŸŸ  CVSS 7.5 โ€” High โœ… No Known Exploit CWE-829 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-829
Public Exploit โœ… No
Source NVD
Published 2026-06-03
Updated 2026-06-05
Modified 2026-06-04
Fix URL N/A

Affected Packages

Software From version Fixed in
securly โ€” โ€”
unknown โ€” โ€”

References

Third Party Advisory https://kb.cert.org/vuls/id/595768

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