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CVE-2020-26978

Mozilla: Internal network hosts could have been probed by a malicious webpage

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Severity

Moderate

Red Hat Product Security

6.1

CVSS 3.0

Review impact separately from score.

Published · December 15, 2020

Updated · November 22, 2025

Description

The Mozilla Foundation Security Advisory describes this flaw as:

Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 6.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor