CVE-2025-67850
Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
7.3
Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
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.
- Record
CVE-2025-67850- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2025-206736
7.3
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.
- Record
EUVD-2025-206736- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6mmv-f6c6-v6q8
7.3
Moodle vulnerable to Cross-site Scripting
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.
- Record
GHSA-6mmv-f6c6-v6q8- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
7.3
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.
- Record
CVE-2025-67850- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
7.3
Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
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.
- Record
CVE-2025-67850- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-6mmv-f6c6-v6q8
7.3
Moodle vulnerable to Cross-site Scripting
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.
- Record
GHSA-6mmv-f6c6-v6q8- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-67850
7.3
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.
- Record
UBUNTU-CVE-2025-67850- CVSS 3.1
- 7.3 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVBIT-moodle-2025-67850 No score
Moodle: moodle: cross-site scripting vulnerability via inadequate input filtering in formula editor
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.
- Record
BIT-moodle-2025-67850- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
before 4.1.22 | 4.1.22 |
moodle/moodlePackagist |
4.4.0-beta up to 4.4.12 | 4.4.12 |
moodle/moodlePackagist |
4.5.0-beta up to 4.5.8 | 4.5.8 |
moodle/moodlePackagist |
5.0.0-beta up to 5.0.4 | 5.0.4 |
moodle/moodlePackagist |
5.1.0-beta up to 5.1.1 | 5.1.1 |
moodleBitnami |
before 4.1.22, 4.4.0 up to 4.4.11, 4.5.0 up to 4.5.8, 5.0.0 up to 5.0.4, 5.1.0 up to 5.1.1 | 4.1.224.4.114.5.85.0.45.1.1 |
moodle/moodlePackagist |
before 4.1.22, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 45 moreShow lessv2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9v2.6.0v2.6.0-betav2.6.0-rc1v2.6.1v2.6.10v2.6.11v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9v2.7.0v2.7.0-betav2.7.0-rc1 |
4.1.22 |
moodle/moodlePackagist |
4.4.0-beta up to 4.4.12, plus listed versions v4.4.0v4.4.0-betav4.4.0-rc1v4.4.0-rc2v4.4.1 Show 10 moreShow lessv4.4.10v4.4.11v4.4.2v4.4.3v4.4.4v4.4.5v4.4.6v4.4.7v4.4.8v4.4.9 |
4.4.12 |
moodle/moodlePackagist |
4.5.0-beta up to 4.5.8, plus listed versions v4.5.0v4.5.0-betav4.5.0-rc1v4.5.0-rc2v4.5.1 Show 6 moreShow lessv4.5.2v4.5.3v4.5.4v4.5.5v4.5.6v4.5.7 |
4.5.8 |
moodle/moodlePackagist |
5.0.0-beta up to 5.0.4, plus listed versions v5.0.0v5.0.0-betav5.0.0-rc1v5.0.0-rc2v5.0.0-rc3v5.0.1v5.0.2v5.0.3 |
5.0.4 |
moodle/moodlePackagist |
5.1.0-beta up to 5.1.1, plus listed versions v5.1.0v5.1.0-betav5.1.0-rc1v5.1.0-rc2 |
5.1.1 |
moodleUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-13.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
moodleUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-67850 is a high vulnerability (CVSS 7.3) in Moodle, published February 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. Fixed in moodle/moodle 4.1.22.
References
Left out here: 304 versions. The JSON record has them.