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Vulnerability details: VCID-7m3q-wuh7-k7fn
Vulnerability ID VCID-7m3q-wuh7-k7fn
Aliases CVE-2021-30154
Summary Multiple vulnerabilities have been found in MediaWiki, the worst of which could result in a Denial of Service condition.
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 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.00814 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
epss 0.01115 https://api.first.org/data/v1/epss?cve=CVE-2021-30154
archlinux Medium https://security.archlinux.org/AVG-1775
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
1946690 https://bugzilla.redhat.com/show_bug.cgi?id=1946690
AVG-1775 https://security.archlinux.org/AVG-1775
GLSA-202107-40 https://security.gentoo.org/glsa/202107-40
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.74306
EPSS Score 0.00814
Published At April 21, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:04:33.585134+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202107-40 38.0.0