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Vulnerability details: VCID-y6ym-xe1c-aaaq
Vulnerability ID VCID-y6ym-xe1c-aaaq
Aliases CVE-2021-30154
Summary An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On Special:NewFiles, all the mediastatistics-header-* messages are output in HTML unescaped, leading to XSS.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30154.json
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00530 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00553 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00553 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00553 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00553 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01362 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.02799 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1946690
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20270
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27291
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-30154
cvssv3 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-30154
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-30154
archlinux Medium https://security.archlinux.org/AVG-1775
cvssv3.1 6.1 https://security.gentoo.org/glsa/202107-40
generic_textual MODERATE https://security.gentoo.org/glsa/202107-40
cvssv3.1 7.5 https://www.debian.org/security/2021/dsa-4889
generic_textual HIGH https://www.debian.org/security/2021/dsa-4889
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30154.json
https://api.first.org/data/v1/epss?cve=CVE-2021-30154
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20270
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27291
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30152
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30154
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30155
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30157
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30158
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30159
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
https://phabricator.wikimedia.org/T278014
https://security.gentoo.org/glsa/202107-40
https://www.debian.org/security/2021/dsa-4889
1946690 https://bugzilla.redhat.com/show_bug.cgi?id=1946690
AVG-1775 https://security.archlinux.org/AVG-1775
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-30154 https://nvd.nist.gov/vuln/detail/CVE-2021-30154
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30154.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30154
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30154
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30154
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://security.gentoo.org/glsa/202107-40
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.debian.org/security/2021/dsa-4889
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.77517
EPSS Score 0.00530
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.