Moodle: possible to set the preferred "start page" of other users

Description

The vulnerability was found Moodle which exists due to insufficient limitations on the "start page" preference. A remote attacker can set that preference for another user. The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

Scores

EPSS (exploitation in 30 days)

0.96% · top 38% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.

Weakness

• CWE-284: Improper Access Control (opens in a new tab)All about CWE-284 and its CVEs

Affected products

• moodle

  • affected 4.1.0 – < 4.1.1
  • affected 4.0.0 – < 4.0.6
  • affected 3.11.0 – < 3.11.12
  • affected < 3.9.19

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Packagistmoodle/moodleGHSA-32jc-9p58-p82x (opens in a new tab)

References (3)

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-76862 (opens in a new tab)x_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=2162549 (opens in a new tab)x_transferred
• https://moodle.org/mod/forum/discuss.php?d=443274#p1782023 (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-32jc-9p58-p82x (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-23923](https://trackcve.app/badge/CVE-2023-23923.svg)](https://trackcve.app/cve/CVE-2023-23923)

Record last updated 2 Aug 2024, 10:42 UTC.