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Fencer Intel
medium 5.0

CVE-2011-4301 json

Moodle Allows Modification of Constants

published 2012-07-11 14 y ago modified 2026-06-16 4 mo ago also GHSA-jcrj-gmr6-p5j8 , EUVD-2022-4333

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The MoodleQuickForm class in the Forms Library in lib/formslib.php in Moodle 1.9.x before 1.9.14, 2.0.x before 2.0.5, and 2.1.x before 2.1.2 does not recognize Forms API setConstant operations, which allows remote attackers to submit unexpected form content by modifying the values of constant fields.

Patch / fix

  • packagist moodle/moodle 1.9.14, 2.0.5, 2.1.2

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-2011-4301 updated cvss 4.3

moodle: Multiple security fixes in 2.1.2, 2.0.5, and 1.9.14

  • 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

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
<1.9.14
>=2.0, <2.0.5
>=2.1, <2.1.2
1.9.14
2.0.5
2.1.2

Classification

Weakness
  • CWE-471 Modification of Assumed-Immutable Data (MAID)

References

Sources

Fencer Intel 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.