CVE-2020-25814: Mediawiki/core Cross-Site Scripting Vulnerability
MODERATECVE-2020-25814 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Mediawiki/core libraries in the Packagist ecosystem. The issue involves mediawiki cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 1.31.9, 1.34.3, 1.35.0.
CVE-2020-25814 at a Glance
Security Impact
CVSS: 6.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2020-25814
To remediate this vulnerability, upgrade all affected Mediawiki/core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade mediawiki/core to 1.31.9Upgrade mediawiki/core to 1.34.3Upgrade mediawiki/core to 1.35.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for mediawiki/coreHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-25814, inspect your project dependencies for Mediawiki/core:
inspect dependencies for mediawiki/coreAnalyze the terminal output to locate any version of Mediawiki/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.31.9), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Mediawiki/core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-25814 Affected Mediawiki/core Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
mediawiki/core
|
Packagist |
≥ 1.31.0
< 1.31.9
|
1.31.9
|
|
mediawiki/core
|
Packagist |
≥ 1.32.0
< 1.34.3
|
1.34.3
|
|
mediawiki/core
|
Packagist |
≥ 1.35.0-rc.0
< 1.35.0
|
1.35.0
|
References
Frequently Asked Questions
What is CVE-2020-25814?
Which Mediawiki/core versions are affected?
What version fixes CVE-2020-25814?
Is mediawiki/core affected?
What is the CVSS score of CVE-2020-25814?
What CWE is associated with CVE-2020-25814?
How can I check Packagist dependencies for CVE-2020-25814?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4vr7-m8p8-434h",
"modified" : "2024-05-17T21:56:21Z",
"published" : "2022-05-24T17:29:42Z",
"aliases" : [ "CVE-2020-25814" ],
"summary" : "MediaWiki Cross-site Scripting (XSS) vulnerability",
"details" : "In MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href =\"javascript... that executes when clicked.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "mediawiki/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.31.0"
}, {
"fixed" : "1.31.9"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "mediawiki/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.32.0"
}, {
"fixed" : "1.34.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "mediawiki/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.35.0-rc.0"
}, {
"fixed" : "1.35.0"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25814"
}, {
"type" : "WEB",
"url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25814.yaml"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/wikimedia/mediawiki"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6"
}, {
"type" : "WEB",
"url" : "https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"
}, {
"type" : "WEB",
"url" : "https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"
}, {
"type" : "WEB",
"url" : "https://phabricator.wikimedia.org/T86738"
}, {
"type" : "WEB",
"url" : "https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsg"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2024-05-17T21:56:21Z",
"nvd_published_at" : "2020-09-27T21:15:00Z"
}
}