CVE-2026-8874
CVE-2026-8874
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.
INFO
Published Date :
June 3, 2026, 7:16 p.m.
Last Modified :
July 22, 2026, 8:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the extension to use HTTPS for all data transfers.
- Implement TLS for all network requests.
- Verify encryption protocols for all endpoints.
Public PoC/Exploit Available at Github
CVE-2026-8874 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8874.
| URL | Resource |
|---|---|
| https://kb.cert.org/vuls/id/595768 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8874 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8874
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Santh: open source Rust security and infrastructure tooling
gpu open-source pentesting rust secret-scanner security
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8874 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8874 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Translation Title: Securly Chrome Extension de Securly, Description: La versión 3.0.7 de la extensión de Chrome de Securly descarga archivos JSON que contienen palabras clave de alerta de crisis y reglas de filtrado a través de HTTP sin cifrar mediante la API Fetch. Otros puntos finales en la misma extensión recuperan correctamente los datos IWF y CIPA a través de HTTPS, lo que demuestra una implementación inconsistente de TLS. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Securly', 'product': 'Securly Chrome Extension', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.0.7', 'versionType': 'custom'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-8874', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-04T14:42:14.501953Z'} -
Initial Analysis by [email protected]
Jun. 05, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:securly:securly:3.0.7:*:*:*:*:chrome:*:* Added Reference Type CERT/CC: https://kb.cert.org/vuls/id/595768 Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 04, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Added CWE CWE-319 -
New CVE Received by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added 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. Added Reference https://kb.cert.org/vuls/id/595768