Home/CVE/A flaw was found in moodle. This formula injection vulnerability occurs when data fields are exported without proper esc
CVE

CVE-2025-67851

A flaw was found in moodle. This formula injection vulnerability occurs when data fields are exported without proper esc

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.

MEDIUM · CVSS 6.1 EPSS 0.00049
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1236Improper Neutralization of Formula Elements in a CSV File
▤

Affected Products & Versions

5
moodle< 4.1.22
moodle>= 4.4.0 and < 4.4.11
moodle>= 4.5.0 and < 4.5.8
moodle>= 5.0.0 and < 5.0.4
moodleall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist moodle/moodle MEDIUM fixed in 4.1.22
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · patrick@puiterwijk.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Feb 2026 · 11:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2025-67851Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2423841Issue TrackingThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=471301Vendor Advisory
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