CVE-2023-35131
Moodle: xss risk on groups page
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Moodle: xss risk on groups page
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
CVE-2023-35131- 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
EUVDEUVD-2023-1791
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
EUVD-2023-1791- 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
- 2026-11-03
GitHub AdvisoriesGHSA-fwfj-8p36-rc64
Moodle vulnerable to Cross-site Scripting
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
GHSA-fwfj-8p36-rc64- 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
NVD
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
CVE-2023-35131- 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
Moodle: xss risk on groups page
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
CVE-2023-35131- 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
OSVGHSA-fwfj-8p36-rc64
Moodle vulnerable to Cross-site Scripting
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
GHSA-fwfj-8p36-rc64- 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
OSVUBUNTU-CVE-2023-35131
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
UBUNTU-CVE-2023-35131- 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-2023-35131 No score
Moodle: xss risk on groups page
Content on the groups page required additional sanitizing to prevent an XSS risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8 and 3.11 to 3.11.14.
- Record
BIT-moodle-2023-35131- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
4.2.0 to 4.2.0 | 4.2.1 |
moodle/moodlePackagist |
4.1.0 up to 4.1.4 | 4.1.4 |
moodle/moodlePackagist |
4.0.0 up to 4.0.9 | 4.0.9 |
moodle/moodlePackagist |
before 3.11.15 | 3.11.15 |
moodleBitnami |
3.11.0 up to 3.11.15, 4.0.0 up to 4.0.9, 4.1.0 up to 4.1.4, 4.2.0 up to 4.2.1 | 3.11.154.0.94.1.44.2.1 |
moodle/moodlePackagist |
4.2.0 up to 4.2.1, plus listed versions v4.2.0 |
4.2.1 |
moodle/moodlePackagist |
4.1.0 up to 4.1.4, plus listed versions v4.1.0v4.1.1v4.1.2v4.1.3 |
4.1.4 |
moodle/moodlePackagist |
4.0.0 up to 4.0.9, plus listed versions v4.0.0v4.0.1v4.0.2v4.0.3v4.0.4 Show 4 moreShow lessv4.0.5v4.0.6v4.0.7v4.0.8 |
4.0.9 |
moodle/moodlePackagist |
before 3.11.15, 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 |
3.11.15 |
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 |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-35131 is a medium vulnerability (CVSS 6.1) in Moodle, published June 22, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.68%, the 52nd percentile. Fixed in moodle/moodle 4.2.1.
References
bugzilla.redhat.com/show_bug.cgi?id=2214369
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC
moodle.org/mod/forum/discuss.php?d=447829
nvd.nist.gov/vuln/detail/CVE-2023-35131
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-76683
Show 8 moreShow less
github.com/advisories/GHSA-fwfj-8p36-rc64
ubuntu.com/security/CVE-2023-35131
cve.org/CVERecord?id=CVE-2023-35131
Left out here: 256 versions. The JSON record has them.