CVE-2025-67851

Published Feb 3, 2026

Last updated 22 days ago

CVSS medium 6.1

Overview

Description
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.
Source
patrick@puiterwijk.org
NVD status
Analyzed
Products
moodle

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

patrick@puiterwijk.org
CWE-1236

Social media

Hype score
Not currently trending

  1. CVE-2025-67851 Formula Injection Vulnerability in Moodle Enabling Arbitrary Spreadsheet Execution https://t.co/yRHxYzd7p6

    @VulmonFeeds

    3 Feb 2026

    56 Impressions

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  2. CVE-2025-67851 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… https://t.co/SPy0vTaIaq

    @CVEnew

    3 Feb 2026

    157 Impressions

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Configurations

Related CVEs

  1. A denial-of-service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.•CVE-2026-26047
  2. A vulnerability was found in a Moodle TeX filter administrative setting where insufficient sanitization of configuration input could allow command injection. On sites where the TeX filter is enabled and ImageMagick is installed, a maliciously crafted setting value entered by an administrator could result in unintended system command execution. While exploitation requires administrative privileges, successful compromise could affect the entire Moodle server.•CVE-2026-26046
  3. A flaw was identified in Moodle’s backup restore functionality where specially crafted backup files were not properly validated during processing. If a malicious backup file is restored, it could lead to unintended execution of server-side code. Since restore capabilities are typically available to privileged users, exploitation requires authenticated access. Successful exploitation could result in full compromise of the Moodle server.•CVE-2026-26045
  4. A flaw was found in moodle. During anonymous assignment submissions, user identifiers were inadvertently exposed in URLs. This data exposure allows unauthorized viewers to see internal user IDs, compromising the intended anonymity and potentially leading to information disclosure.•CVE-2025-67857
  5. A flaw was found in Moodle. An authorization logic flaw, specifically due to incomplete role checks during the badge awarding process, allowed badges to be granted without proper verification. This could enable unauthorized users to obtain badges they are not entitled to, potentially leading to privilege escalation or unauthorized access to certain features.•CVE-2025-67856

References

Sources include official advisories and independent security research.