Vulnerability · Published Jun 3, 2026 · Assigned by certcc
CVE-2026-8874CVE-2026-8874
High 7.1
In plain English
A high-severity security flaw in Securly Chrome Extension from Securly. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.1%top 96.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Version 3.0.7 of the Securly Chrome Extension downloads JSON files containing crisis alert keywords and filtering rules over unencrypted HTTP via the Fetch API. Other endpoints in the same extension correctly fetch IWF and CIPA data over HTTPS, demonstrating an inconsistent implementation of TLS.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Securly | Securly Chrome Extension | 0 – before 3.0.7 |
Weakness: CWE-319 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N