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CVE-2022-35650

Exploitation likely. EPSS gives it a 54% chance of exploitation in the next 30 days. Fixed in 3.9.15.

CVSS 3.17.5HighEPSS percentile99th54% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix3.9.15Upgrade to this build

Published Updated Sources: CVE.org, NVD, GitHub, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • n/a MoodleAffected: Fixed in moodle 4.0.2, moodle 3.11.8, moodle 3.9.15Upgrade to: not statedStated by: CVE record
  • Packagist moodle/moodleAffected: ≥ 3.9, < 3.9.15Upgrade to: 3.9.15Stated by: GitHub advisory
  • MoodleAffected: ≥ 3.9.0, < 3.9.15Upgrade to: 3.9.15Stated by: NVD
  • Fedora Project FedoraAffected: 35Upgrade to: not statedStated by: BDU
  • ООО «Ред Софт» РЕД ОСAffected: 7.3Upgrade to: not statedStated by: BDU

Versions as the sources state them. 2 more products have version data. Full version matrix after sign-in

Steps

Written by AI from the record
  1. Check which version of Moodle you are running (visible in the admin dashboard footer or Site administration > Server > Environment).
  2. If you are on a version older than 3.9.15, 3.11.8, or 4.0.2, plan an upgrade.
  3. Update Moodle to 3.9.15, 3.11.8, or 4.0.2 (whichever matches your current branch) as soon as possible.
  4. In the meantime, limit who has teacher, manager, or admin accounts, since only those roles can trigger the issue.
  5. After updating, confirm the lesson import feature works normally and review recent lesson imports for anything suspicious.
composer require moodle/moodle:>=3.9.15
Vendor advisory Usually a quick update
Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.

In plain language

Written by AI from the record

A flaw in Moodle's lesson question import feature lets certain logged-in users (teachers, managers, admins) read files on the server they shouldn't be able to; it's fixed in version 3.9.15 and later, and small businesses running Moodle for training or courses should update soon.

Path traversal / improper input validation (CWE-22, CWE-20) in Moodle's lesson question import function allows a user with teacher/manager/admin privileges to read arbitrary files on the server, fixed in 3.9.15, 3.11.8, and 4.0.2.

If you're affected

  • Server configuration file exposure
  • Leaked credentials or secrets
  • Student/customer data exposure
  • Reputational damage from data leak

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

54% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

9 events over 1539 days, from the signal feeds we watch.

  1. EPSS band changemoderate → highepss band change
  2. OpenVAS check added
  3. EPSS band changelow → moderate
  4. Patch availablerecord updated
  5. Publishedweakness classified, att&ck mapped

Affected products

And 2 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Scored 7.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 13 more references. See all after sign-in

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