Low
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-15005
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:56 UTC · Revision 1
Source evidence
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.
osv:CVE-2020-15005
Complete source record
{
"id": "648b73f3855ebb12ae2e190f3bb7180ee9c8b652eae428feb59b6d2fdbd712f4",
"url": "https://osv.dev/vulnerability/CVE-2020-15005",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-15005",
"summary": "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.",
"evidence": "osv:CVE-2020-15005",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2020-15005",
"aliases": [
"BIT-mediawiki-2020-15005",
"CVE-2020-15005",
"GHSA-xpv7-93cm-4mxv"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wikimedia/mediawiki",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c759d64146ad3d48c316b0052b7e240def4634da"
},
{
"introduced": "0fbb878ef366477535a709b0c2564bdcf4b176d1"
},
{
"fixed": "8f927cbf330b6ee6e675fb92435b7ee933736189"
},
{
"introduced": "ba90e337a4a58eb3b2fba43745d8de4a1cdafec1"
},
{
"fixed": "18c2d20c54f9851af639cb24603493ca197baaa8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.31.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.32.0"
},
{
"fixed": "1.33.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.34"
},
{
"fixed": "1.34.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"1.34.1",
"1.33.3",
"1.31.7",
"1.34.0",
"1.33.2",
"1.31.6",
"1.34.0-rc.1",
"1.31.5",
"1.34.0-rc.0",
"1.33.1",
"1.31.4",
"1.33.0",
"1.31.3",
"1.33.0-rc.0",
"1.31.2",
"1.31.1",
"1.31.0",
"1.31.0-rc.2",
"1.31.0-rc.1",
"1.31.0-rc.0",
"test-hashar-for-ci",
"1.6.0",
"1.5.0beta4",
"1.5.0beta3",
"1.5.0beta2",
"1.5.0beta1",
"1.5.0alpha2",
"1.5.0alpha1",
"1.3.0beta1",
"1.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15005.json"
}
}
],
"modified": "2026-10-24T10:31:00.600623110Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EEZIMLJMJS72SJXPYL736XMUAVCRQD2H/",
"https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_31/RELEASE-NOTES-1.31",
"https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_33/RELEASE-NOTES-1.33",
"https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_34/RELEASE-NOTES-1.34",
"https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html",
"https://lists.wikimedia.org/pipermail/wikitech-l/2020-June/093535.html",
"https://www.debian.org/security/2020/dsa-4767",
"https://phabricator.wikimedia.org/T248947"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-15005",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439576,
"published_at": "2020-06-24T23:15:10.59+00:00"
}