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Fencer Vulns
medium 6.5

CVE-2020-6511 json

Information leak in content security policy in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to leak cross-origin data via…

published 2020-07-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27660

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Information leak in content security policy in Google Chrome prior to 84.0.4147.89 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Patch / fix

  • Google Chrome 84.0.4147.89
  • chromium Debian 14, Debian 13, Debian 12 87.0.4280.88-0.1

debian advisories DEBIAN-CVE-2020-6511

  • chromium-browser Ubuntu 16.04 LTS 84.0.4147.105-0ubuntu0.16.04.1
  • chromium-browser Ubuntu 18.04 LTS 84.0.4147.105-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2020-6511

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium-browser RHEL 6 EXTRAS 84.0.4147.105-2.el6_10

red hat advisories RHSA-2020:3377

  • chromium openSUSE Tumbleweed 93.0.4577.82-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • opera openSUSE Leap 15.2 NonFree 70.0.3728.71-lp152.2.12.1
  • opera openSUSE Leap 15.1 NonFree 70.0.3728.71-lp151.2.24.1
  • chromium Package Hub 15 SP1 84.0.4147.89-bp151.3.94.1
  • chromium Package Hub 15 SP2 84.0.4147.89-bp152.2.7.1
  • chromium openSUSE Leap 15.1 84.0.4147.89-lp151.2.109.1
  • chromium openSUSE Leap 15.2 84.0.4147.89-lp152.2.6.2

opensuse advisories openSUSE-SU-2024:10681-1openSUSE-SU-2024:12948-1openSUSE-SU-2020:1172-1openSUSE-SU-2020:1148-1openSUSE-SU-2020:1061-1openSUSE-SU-2020:1048-1

  • chromium Arch Linux 84.0.4147.89-1

arch linux advisories AVG-1206

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-6511 updated cvss 6.5

chromium-browser: Side-channel information leakage in content security policy

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 84.0.4147.105-2.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 84.0.4147.105-2.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 84.0.4147.105-2.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 84.0.4147.105-2.el6_10
    fixed: vendor fix RHSA-2020:3377

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-209 Generation of Error Message Containing Sensitive Information
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.