SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-6399

Insufficient policy enforcement in AppCache in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

MEDIUM 6.5EPSS 1.99%

Does this matter?

Lower severity and a low EPSS score (1.99%). Track it; it rarely justifies an emergency change on its own.

Description

Insufficient policy enforcement in AppCache in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
1.99% probability · 81th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20
Affected
google/chrome · opensuse/backports sle
Source
chrome-cve-admin@google.com
EPSS trend
0%3%5%26 October 2026: 1.99%26 October 202626 October 2026

EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.