CVE-2026-8874

7.1 HIGH 0.1% exploit odds No fix listed Other Browser & mail

What it is

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.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. High risk of data tampering.
Exploit odds: 0.1% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-06-03 19:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-07-22 20:10 UTC Last updatedMost recent change to the record

Details

Published: 2026-06-03 19:16 UTC
Last modified: 2026-07-22 20:10 UTC
Exploit probability: 0.1% · EPSS, next 30 days
Weakness: CWE-319 · Cleartext transmission
Record status: Analyzed

Affected

Securly 3.0.7

Attack profile CVSS 3.1 · 7.1

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: High
Availability: None

Raw vector

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

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References

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

NVD record · CVE.org record