CVE-2020-15005

Description

In MediaWiki before 1.31.8, 1.32.x and 1.33.x before 1.33.4, and 1.34.x before 1.34.2, private wikis behind a caching server using the img_auth.php image authorization security feature may have had their files cached publicly, so any unauthorized user could view them. This occurs because Cache-Control and Vary headers were mishandled.

How to fix CVE-2020-15005

To remediate CVE-2020-15005, upgrade the affected package to a fixed version below.

—upgrade to 1.31.8 or later
—upgrade to 1:1.31.8-1 or later
—upgrade to 1:1.27.7-1~deb9u7 or later
—upgrade to 1:1.31.10-1~deb10u1 or later
—upgrade to 1.31.8 or later

Is CVE-2020-15005 being exploited?

Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

from 0, < 1.31.8, >= 1.32.0, < 1.33.4, >= 1.34.0, < 1.34.2
from 0, < 1:1.31.8-1
from 0, < 1:1.27.7-1~deb9u7
from 0, < 1:1.31.10-1~deb10u1
from 0, < 1.31.8

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	LOW3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N