CVE-2023-28333
No exploitation reported by the sources we read.
- Published2023-03-23
- Fixed in4.1.2 · 4.0.7 · 3.11.13 · 3.9.20
- WeaknessCWE-94
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
The Mustache pix helper contained a potential Mustache injection risk if combined with user input (note: This did not appear to be implemented/exploitable anywhere in the core Moodle LMS).
Timeline
dates in UTC- 2023-03-2321:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-28333?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28333?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV · NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.1 | ≥ 4.1.0, < 4.1.2 | 4.1.2 | OSV |
| 4.0 | > 4.0.0, < 4.0.7 | 4.0.7 | NVD |
| 4.0 | ≥ 4.0.0, < 4.0.7 | 4.0.7 | OSV |
| 3.11 | > 3.11.0, < 3.11.13 | 3.11.13 | NVD |
| 3.11 | ≥ 3.11.0, < 3.11.13 | 3.11.13 | OSV |
| 3.9 | > 3.9.0, < 3.9.20 | 3.9.20 | NVD |
| 3.9 | ≥ 3.9.0, < 3.9.20 | 3.9.20 | OSV |
| 3.9 | < 3.9.20 | 3.9.20 | OSV |
| 3.9 | = 3.9.0 | no fix published | NVD |
| 3.11 | = 3.11.0 | no fix published | NVD |
| 4.0 | = 4.0.0 | no fix published | NVD |
| 4.1 | = 4.1.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 36.x | = 36 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Moodle to 4.1.2 · 4.0.7 · 3.11.13 · 3.9.20
Advisories and patches
- moodle.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2023-03-23
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-28333?
Is CVE-2023-28333 actively exploited?
What is the CVSS score for CVE-2023-28333?
Running moodle? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.