CVE-2026-8874
CVE-2026-8874
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.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
CVE-2026-8874
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.
- Record
CVE-2026-8874- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-319
- Updated
- 2026-11-02
EUVDEUVD-2026-34161
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.
- Record
EUVD-2026-34161- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-58xm-2wvc-7p7f
Version 3.0.7 of the Securly Chrome Extension downloads JSON files containing crisis alert...
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.
- Record
GHSA-58xm-2wvc-7p7f- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-319
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-8874- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-319
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-8874 is a high vulnerability (CVSS 7.1) in Securly, published June 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. No source names a fixed version.