CVE-2020-15005

Name: CVE-2020-15005
Creator: NVD / NIST
Published: 2020-06-24T23:15:10.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.1/10EPSS 1.30%

Last modified Jun 17, 2026

CVE-2020-15005 is a low-severity vulnerability rated 3.1/10 on the CVSS scale. 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.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

3.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS Probability

1.30%

66.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.31.8
Mediawiki	Mediawiki	>= 1.32.0, < 1.33.4
Mediawiki	Mediawiki	>= 1.34, < 1.34.2
Fedoraproject	Fedora	32
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_31/RELEASE-NOTES-1.31Release Notes, Vendor Advisory
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_33/RELEASE-NOTES-1.33Release Notes, Vendor Advisory
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_34/RELEASE-NOTES-1.34Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/
https://lists.wikimedia.org/pipermail/wikitech-l/2020-June/093535.htmlMailing List, Release Notes, Vendor Advisory
https://phabricator.wikimedia.org/T248947Patch, Vendor Advisory
https://www.debian.org/security/2020/dsa-4767Third Party Advisory
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_31/RELEASE-NOTES-1.31Release Notes, Vendor Advisory
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_33/RELEASE-NOTES-1.33Release Notes, Vendor Advisory
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_34/RELEASE-NOTES-1.34Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/
https://lists.wikimedia.org/pipermail/wikitech-l/2020-June/093535.htmlMailing List, Release Notes, Vendor Advisory
https://phabricator.wikimedia.org/T248947Patch, Vendor Advisory
https://www.debian.org/security/2020/dsa-4767Third Party Advisory

Timeline

Published: Jun 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15005?

How severe is CVE-2020-15005?

CVE-2020-15005 has a CVSS score of 3.1/10 (LOW severity). The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15005?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15005?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST