CVE-2018-8366
An information disclosure vulnerability exists when the Microsoft Edge Fetch API incorrectly handles a filtered response type, aka "Microsoft Edge Information Disclosure Vulnerability." This affects Microsoft Edge.
Does this matter?
Lower severity and a low EPSS score (5.05%). Track it; it rarely justifies an emergency change on its own.
Description
An information disclosure vulnerability exists when the Microsoft Edge Fetch API incorrectly handles a filtered response type, aka "Microsoft Edge Information Disclosure Vulnerability." This affects Microsoft Edge.
- CVSS 3.0
- 3.1 LOWCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
- EPSS
- 5.05% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- microsoft/edge
- Source
- secure@microsoft.com
EPSS moved from 6.1% on 21 September 2026 to 5.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/105253Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041623Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8366Patch, Vendor Advisory
- http://www.securityfocus.com/bid/105253Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041623Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8366Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.