CVE-2026-8874 | BDVDB-2026-337409 Detail

SecurlySecurly Chrome Extension

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact high, availability impact none. Attack vector: adjacent.

Weaknesses#

CWE-319 Cleartext Transmission of Sensitive Information

References#

https://kb.cert.org/vuls/id/595768

Exploit#

No public exploit known

History#

Version 12026-06-03Record published in the CVE List.
Version 22026-06-04Most recent update recorded in the CVE List.

Published

Published: 2026-06-03
Last modified: 2026-06-04

Vendor information

Vendor: Securly
Product: Securly Chrome Extension

All Securly vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 3.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 3.0.7
Fixed
3.0.7

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.1 High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).