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Fencer Vulns
low 3.4

CVE-2025-26528 json

Stored XSS in ddimageortext question type

published 2025-02-24 20 mo ago modified 2026-09-08 2 mo ago also BIT-moodle-2025-26528 , EUVD-2025-4273 , GHSA-h697-w4ph-7pcx

cvss
3.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

The drag-and-drop onto image (ddimageortext) question type required additional sanitizing to prevent a stored XSS risk.

Patch / fix

  • packagist moodle/moodle 4.1.16, 4.3.10, 4.4.6, 4.5.2
  • bitnami moodle 4.1.16, 4.3.10, 4.4.6, 4.5.2
  • Moodle Project moodle 4.1.16, 4.3.10, 4.4.6, 4.5.2

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-2025-26528 updated cvss 3.4

moodle: Stored XSS in ddimageortext question type

  • 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N
GitHub 3.1 3.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/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
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
>=4.5.0-beta, <4.5.2
>=4.4.0-beta, <4.4.6
>=4.3.0-beta, <4.3.10
<4.1.16
4.5.2
4.4.6
4.3.10
4.1.16
bitnami moodle
>=4.1.0, <4.1.16
>=4.3.0, <4.3.10
>=4.4.0, <4.4.6
>=4.5.0, <4.5.2
4.1.16
4.3.10
4.4.6
4.5.2

Affected products

  • Moodle Project 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.