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Fencer Vulns
medium 6.1

CVE-2020-25628 json

Cross site-scripting (XSS) moodle

published 2020-12-08 5 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2020-25628 , EUVD-2021-0616 , GHSA-5x33-h32w-6vr2

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

The filter in the tag manager required extra sanitizing to prevent a reflected XSS risk. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. Fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.

Patch / fix

  • packagist moodle/moodle 3.5.14, 3.7.8, 3.8.5, 3.9.2
  • bitnami moodle 3.5.14, 3.7.8, 3.8.5, 3.9.2
  • moodle moodle 3.5.14, 3.7.8, 3.8.5, 3.9.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-25628 updated cvss 6.5

moodle: filter in tag manager required extra sanitizing to prevent reflected XSS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.9.0, <3.9.2
>=3.8.0, <3.8.5
>=3.7.0, <3.7.8
>=3.5, <3.5.14
3.9.2
3.8.5
3.7.8
3.5.14
bitnami moodle
>=3.5.0, <3.5.14
>=3.7.0, <3.7.8
>=3.8.0, <3.8.5
>=3.9.0, <3.9.2
3.5.14
3.7.8
3.8.5
3.9.2

Affected products

  • n/a Moodle

Classification

Weakness
  • 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.