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:NAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
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
- NVD status
- Modified