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Fencer Intel
medium 4.9

CVE-2011-4582 json

Moodle Open Redirect in Calendar Set Page

published 2012-07-20 14 y ago modified 2026-06-16 4 mo ago also GHSA-jcrj-x36p-h9f6 , EUVD-2022-4334

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Open redirect vulnerability in the Calendar set page in Moodle 2.1.x before 2.1.3 allows remote authenticated users to redirect users to arbitrary web sites and conduct phishing attacks via a redirection URL.

Patch / fix

  • packagist moodle/moodle 2.1.3

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-2011-4582 updated cvss 4.3

moodle: multiple security fixes in 2.1.3, 2.0.6, and 1.9.15

  • 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

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:N/AC:M/Au:S/C:P/I:P/A:N

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=2.1, <2.1.3
2.1.3

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-601 URL Redirection to Untrusted Site

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.