Vulnerability in Moodle
CVE-2021-21809
A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vu…
EPSS: 0.729 (98.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L.
Affected products
- N/a Moodle — versions Moodle 3.10
Public proof-of-concept exploits
References
- talosintelligence.com/vulnerability_reports/TALOS-2021-1277 (x_refsource_MISC)
- packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Rem… (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-21809?
- CVE-2021-21809 is a high-severity vulnerability in Moodle. CVSS score: 8.2/10. Published 2021-06-23.
- How severe is CVE-2021-21809?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2021-21809 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.