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CVE-2025-67848· NVD / CVE Program· CNA fedora

Moodle: moodle: authentication bypass via lti provider allows suspended users to gain unauthorized access.

A flaw was found in Moodle. This authentication bypass vulnerability allows suspended users to authenticate through the Learning Tools Interoperability (LTI) Provider. The issue arises from the LTI authentication handlers failing to enforce the user's suspension status, enabling unauthorized access to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Feb 3, 2026
Updated
Jun 17, 2026
EPSS
0.4% · 34th percentile
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Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · fedora
8.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
moodlemoodle

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • moodle moodlebefore 4.1.22
  • moodle moodle4.4.0 and later · before 4.4.11
  • moodle moodle4.5.0 and later · before 4.5.8
  • moodle moodle5.0.0 and later · before 5.0.4
  • moodle moodle5.1.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (fedora). Independent of NVD's CPE analysis and usually ahead of it.

  • github.com/moodle/moodle/ moodle

    • 4.1.0 and later · before 4.1.22affected · semver
    • 4.4.0 and later · before 4.4.12affected · semver
    • 4.5.0 and later · before 4.5.8affected · semver
    • 5.0.0 and later · before 5.0.4affected · semver
    • 5.1.0 and later · before 5.1.1affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistmoodle/moodlefrom 4.4.0-beta · before 4.4.124.4.12
Packagistmoodle/moodlefrom 4.5.0-beta · before 4.5.84.5.8
Packagistmoodle/moodlefrom 5.0.0-beta · before 5.0.45.0.4
Packagistmoodle/moodlefrom 5.1.0-beta · before 5.1.15.1.1
Packagistmoodle/moodlebefore 4.1.224.1.22

Same product

moodle: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-43425Moodle: remote code execution via calculated question types
    58Plan
  • CVE-2021-36393In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses.
    55Plan
  • CVE-2022-0332A flaw was found in Moodle in versions 3.11 to 3.11.4.
    52Plan
  • CVE-2022-35650The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions.
    45Plan
  • CVE-2018-1133An issue was discovered in Moodle 3.x.
    44Plan
  • CVE-2021-21809A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10.
    43Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
github.com/moodle/moodle/ moodle4.1.22Vendor (CNA)
github.com/moodle/moodle/ moodle4.4.12Vendor (CNA)
github.com/moodle/moodle/ moodle4.5.8Vendor (CNA)
github.com/moodle/moodle/ moodle5.0.4Vendor (CNA)
github.com/moodle/moodle/ moodle5.1.1Vendor (CNA)
Packagist:moodle/moodle4.1.22Package registry (OSV)
Packagist:moodle/moodle4.4.12Package registry (OSV)
Packagist:moodle/moodle4.5.8Package registry (OSV)
Packagist:moodle/moodle5.0.4Package registry (OSV)
Packagist:moodle/moodle5.1.1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2025-6784711 days apartMoodle: moodle: remote code execution via insufficient restore input validation
    35Monitor
  • CVE-2026-2604618 days apartMoodle: moodle: improper input sanitization in tex filter administration setting
    29Monitor
  • CVE-2026-2604518 days apartMoodle: moodle: improper validation in file restore functionality leading to remote code execution
    28Monitor
  • CVE-2021-4785713 days apartMoodle 3.10.3 - 'label' Persistent Cross Site Scripting
    20Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-280 · Improper Handling of Insufficient Permissions or Privileges

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records