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Fencer Vulns
medium 5.4

CVE-2021-32475 json

Moodle stored Cross-site Scripting

published 2022-03-11 4 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2021-32475 , EUVD-2022-1331 , GHSA-5wjh-v7c8-wrhx

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

ID numbers displayed in the quiz grading report required additional sanitizing to prevent a stored XSS risk. Moodle 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.

Patch / fix

  • packagist moodle/moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4
  • bitnami moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4
  • moodle moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.5, <3.5.18
>=3.8, <3.8.9
>=3.9, <3.9.7
>=3.10, <3.10.4
3.5.18
3.8.9
3.9.7
3.10.4
bitnami moodle
<3.5.18
>=3.8.0, <3.8.9
>=3.9.0, <3.9.7
>=3.10.0, <3.10.4
3.5.18
3.8.9
3.9.7
3.10.4

Affected products

  • n/a moodle

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.