CVE-2025-67851: Moodle/moodle Moodle Formula Injection Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-qfh6-h7j6-fvjv
CVSS 6.1
CWE-1236
Published
Advisory Summary

CVE-2025-67851 is a MODERATE (CVSS 6.1) moodle formula injection vulnerability vulnerability (CWE-1236: Improper Neutralization of Formula Elements in a CSV File) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle formula injection vulnerability. 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-2025-67851 at a Glance

CVE Identifier CVE-2025-67851
GHSA Identifier GHSA-qfh6-h7j6-fvjv
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-1236: Improper Neutralization of Formula Elements in a CSV File
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2025-67851

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.

moodle/moodle fixed: 4.1.22
Upgrade moodle/moodle to 4.1.22
moodle/moodle fixed: 4.4.12
Upgrade moodle/moodle to 4.4.12
moodle/moodle fixed: 4.5.8
Upgrade moodle/moodle to 4.5.8
moodle/moodle fixed: 5.0.4
Upgrade moodle/moodle to 5.0.4
moodle/moodle fixed: 5.1.1
Upgrade moodle/moodle to 5.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for moodle/moodle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-67851, inspect your project dependencies for Moodle/moodle:

inspect dependencies for moodle/moodle

Analyze 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-1236: Improper Neutralization of Formula Elements in a CSV File, where the product saves user-provided information into a comma-separated value (csv) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product. 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

A flaw was found in Moodle. This formula injection vulnerability occurs when data fields are exported without proper escaping. A remote attacker could exploit this by providing malicious data that, when exported and opened in a spreadsheet, allows arbitrary formulas to execute. This can lead to compromised data integrity and unintended operations within the spreadsheet.

CVE-2025-67851 Affected Moodle/moodle Versions

5 component(s)
Fixed Versions:
4.1.224.4.124.5.85.0.45.1.1
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-2025-67851?
CVE-2025-67851 is a security vulnerability in Moodle/moodle involving Moodle formula injection vulnerability under CWE-1236: Improper Neutralization of Formula Elements in a CSV File.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 across affected packages: moodle/moodle.
What version fixes CVE-2025-67851?
Upgrading to 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is moodle/moodle affected?
Yes, moodle/moodle is affected in releases prior to 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1. Upgrade your dependency to 4.1.22, 4.4.12, 4.5.8, 5.0.4, 5.1.1 or later.
What is the CVSS score of CVE-2025-67851?
CVE-2025-67851 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L.
What CWE is associated with CVE-2025-67851?
CVE-2025-67851 is classified under CWE-1236: Improper Neutralization of Formula Elements in a CSV File (The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product.).
How can I check Packagist dependencies for CVE-2025-67851?
Run the dependency tree command: 'inspect dependencies for moodle/moodle'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qfh6-h7j6-fvjv",
  "modified" : "2026-02-03T19:06:25Z",
  "published" : "2026-02-03T12:30:28Z",
  "aliases" : [ "CVE-2025-67851" ],
  "summary" : "Moodle formula injection vulnerability",
  "details" : "A flaw was found in Moodle. This formula injection vulnerability occurs when data fields are exported without proper escaping. A remote attacker could exploit this by providing malicious data that, when exported and opened in a spreadsheet, allows arbitrary formulas to execute. This can lead to compromised data integrity and unintended operations within the spreadsheet.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.22"
      } ]
    } ]
  }, {
    "package" : {
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      "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-2025-67851"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/29820c5ff4ef381c7a743091ec5c68ac82903b22"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/aa66bacd0783cbc33528fba9c2adca1f685a59bd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/dc57ccc491a2a04032445a3ee92fd0d335ebd746"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2025-67851"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2423841"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=471301"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1236" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-03T19:06:25Z",
    "nvd_published_at" : "2026-02-03T11:15:55Z"
  }
}