CVE-2025-67850: Moodle/moodle Cross-Site Scripting Vulnerability
HIGHCVE-2025-67850 is a HIGH (CVSS 7.3) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle vulnerable to cross-site scripting. Remediation is available by upgrading affected packages to version 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1.
CVE-2025-67850 at a Glance
Security Impact
CVSS: 7.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N).
How to Fix CVE-2025-67850
To remediate this vulnerability, upgrade all affected Moodle/moodle 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 moodle/moodle to 4.1.22Upgrade moodle/moodle to 4.4.12Upgrade moodle/moodle to 4.5.8Upgrade moodle/moodle to 5.0.4Upgrade moodle/moodle to 5.1.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for moodle/moodleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-67850, inspect your project dependencies for Moodle/moodle:
inspect dependencies for moodle/moodleAnalyze the terminal output to locate any version of Moodle/moodle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.1.22), 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 Moodle/moodle, 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-2025-67850 Affected Moodle/moodle Versions
5 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
moodle/moodle
|
Packagist |
< 4.1.22
|
4.1.22
|
|
moodle/moodle
|
Packagist |
≥ 4.4.0-beta
< 4.4.12
|
4.4.12
|
|
moodle/moodle
|
Packagist |
≥ 4.5.0-beta
< 4.5.8
|
4.5.8
|
|
moodle/moodle
|
Packagist |
≥ 5.0.0-beta
< 5.0.4
|
5.0.4
|
|
moodle/moodle
|
Packagist |
≥ 5.1.0-beta
< 5.1.1
|
5.1.1
|
References
Frequently Asked Questions
What is CVE-2025-67850?
Which Moodle/moodle versions are affected?
What version fixes CVE-2025-67850?
Is moodle/moodle affected?
What is the CVSS score of CVE-2025-67850?
What CWE is associated with CVE-2025-67850?
How can I check Packagist dependencies for CVE-2025-67850?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6mmv-f6c6-v6q8",
"modified" : "2026-02-03T19:05:25Z",
"published" : "2026-02-03T12:30:28Z",
"aliases" : [ "CVE-2025-67850" ],
"summary" : "Moodle vulnerable to Cross-site Scripting",
"details" : "A flaw was found in Moodle. This vulnerability, known as Cross-site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.1.22"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.4.0-beta"
}, {
"fixed" : "4.4.12"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.5.0-beta"
}, {
"fixed" : "4.5.8"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0-beta"
}, {
"fixed" : "5.0.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Packagist",
"name" : "moodle/moodle"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.1.0-beta"
}, {
"fixed" : "5.1.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-67850"
}, {
"type" : "WEB",
"url" : "https://github.com/moodle/moodle/commit/c85f153068a717a3b28bc122e75154bac99e67e1"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2025-67850"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2423838"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/moodle/moodle"
}, {
"type" : "WEB",
"url" : "https://moodle.org/mod/forum/discuss.php?d=471300"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-02-03T19:05:25Z",
"nvd_published_at" : "2026-02-03T11:15:55Z"
}
}