VulnerabilityAnalyzed
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.
HIGH 7.1EPSS 0.14%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
- EPSS
- 0.14% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-319
- Affected
- securly/securly
- Source
- cret@cert.org
References
- https://kb.cert.org/vuls/id/595768Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.