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TI-2026-86197 Aliases CVE-2026-93779GHSA-c873-m8w7-q26f

Insecure direct object reference in Tutor LMS exposes sensitive data

Priority LOW 29CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

The Tutor LMS eLearning and online course solution plugin for WordPress from themeum is affected up to and including 4.1.2. Missing validation of a user-controlled key in its REST API routes is an insecure direct object reference (CWE-639). An authenticated attacker with subscriber-level access and a valid API key and secret pair can read paid course lesson and topic content without enrollment, retrieve quiz answer keys, and enumerate the email addresses and usernames of other users, including instructors and administrators.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.2 via the init_routes due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to read paid course lesson and topic content without enrollment, retrieve quiz answer keys including the is_correct field before attempting a quiz, and enumerate the email addresses, usernames, and registration data of other users including instructors and administrators. Exploitation requires that the attacker hold a valid Tutor LMS API key/secret pair, which is issued to subscriber-level users through the plugin's API key management feature.

Why it matters now

EPSS 0.00406 35th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
themeumTutor LMS – eLearning and online course solutionup to 4.1.2—No fix listedCNA
  • Tutor LMS – eLearning and online course solution Vendorthemeum Affected up to 4.1.2 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:themeum:tutor_lms:*:*:*:*:*:*:*:*——themeum
  • cpe:2.3:a:themeum:tutor_lms:*:*:*:*:*:*:*:* Versions — — ·themeum

Remediation

The sources list no fixed version for Tutor LMS.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-93779
  2. 2026-11-07 Alias added: GHSA-c873-m8w7-q26f
  3. 2026-11-08 Priority changed: MEDIUM → LOW

References

Other 10

  • TI-2024-09629 Tutor LMS <= 2.7.6 - Unauthenticated SQL Injection via rating_filter CVSS 3.1HIGH 7.5
  • TI-2023-02936 Tutor LMS < 2.2.1 - Unauthenticated Access to Tutor LMS Lesson Resources via REST API CVSS 3.1HIGH 7.5
  • TI-2021-07196 Qubely < 1.8.6 - Unauthenticated Arbitrary E-mail Sending CVSS 3.1HIGH 7.5
  • TI-2023-05666 WP Crowdfunding < 2.1.9 - Reflected XSS CVSS 3.1MEDIUM 6.1
  • TI-2023-00225 Tutor LMS < 2.0.10 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2023-04422 Tutor LMS < 2.3.0 - Subscriber+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
See all 171 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences