Back
CVE-2023-5539
Moodle: authenticated remote code execution risk in lesson
Medium4.7EPSS 2.2%
- Published
- Updated
- Reserved
- Assigned by
- fedora
Description
A remote code execution risk was identified in the Lesson activity. By default this was only available to teachers and managers.
Timeline
ID reserved
By fedora
- 29 days later
· 29 days later
Published
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fedoraCNA (assigner) | 3.1 | Medium4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Weakness
Affected products
moodle
- affected 4.2.0 – < 4.2.3
- affected 4.1.0 – < 4.1.6
- affected 4.0.0 – < 4.0.11
- affected 3.11.0 – < 3.11.17
- affected < 3.9.24
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistmoodle/moodleGHSA-3xxm-3g3c-w579 (opens in a new tab)
References (3)
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-79408 (opens in a new tab)x_transferred
- RHBZ#2243352 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://moodle.org/mod/forum/discuss.php?d=451580 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-3xxm-3g3c-w579 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-5539)Record last updated .