CVE-2025-67848
Moodle ≤ 4.1.22
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NSummary
CVE-2025-67848 is a high-severity Improper Handling of Insufficient Permissions or Privileges (CWE-280) vulnerability in Moodle Moodle. Its CVSS base score is 8.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 30th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-2 (Account Management) and AC-3 (Access Enforcement) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-67848, published on 2026-02-03, is an authentication bypass vulnerability in Moodle's Learning Tools Interoperability (LTI) Provider. The flaw stems from LTI authentication handlers failing to enforce a user's suspension status, allowing suspended users to authenticate and gain unauthorized access to the system. This can result in information disclosure or other unauthorized actions by restricted users. The vulnerability has a CVSS v3.1 base score of 8.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) and is associated with CWE-280.
The vulnerability requires low privileges (PR:L), typically held by suspended users, and can be exploited over the network with low complexity and no user interaction. An attacker with a suspended account can authenticate through the LTI Provider, bypassing suspension checks, to achieve high impacts on confidentiality and integrity, such as accessing sensitive data or performing unauthorized modifications.
Advisories and discussions on mitigation are available from Red Hat at https://access.redhat.com/security/cve/CVE-2025-67848, Red Hat Bugzilla at https://bugzilla.redhat.com/show_bug.cgi?id=2423831, and Moodle forums at https://moodle.org/mod/forum/discuss.php?d=471298.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-206738
Vulnerability Data
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…
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to the system. This can lead to information disclosure or other unauthorized actions by users who should be restricted.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Auth bypass in public-facing Moodle LTI directly enables exploitation of the web app (T1190) and use of suspended but otherwise valid accounts (T1078).
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
Mitigating Controls (NIST 800-53 r5) AI
AC-3 mandates enforcement of approved authorizations, directly addressing the LTI handlers' failure to check and block suspended users during authentication.
AC-2 requires proper account management including suspension and disabling of accounts, ensuring suspension status is propagated and enforced across all authentication paths like LTI.
IA-2 establishes identification and authentication for organizational users, requiring mechanisms that verify user status to mitigate bypasses in specialized protocols such as LTI Provider.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Defining, enforcing and reviewing access permissions with least privilege directly prevents code paths that mishandle insufficient privileges.
Runtime monitoring of software and data surfaces adverse events triggered by unhandled permission failures.
Generating logs of permission-related events enables detection and analysis of improper handling.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect missing or incorrect privilege handling.
Defines access-control policy that should prevent insufficient-privilege situations.
Specifies how access rights are granted, reviewed and revoked, directly addressing privilege handling.
Requires explicit management of privileged access rights, reducing the chance of missing privilege checks.
Secure-SDLC practices include privilege checks during design and coding.
Secure-coding standards require proper permission checks before resource access.
Hardening callouts derived
Configuration rules from DISA STIG baselines that reduce the attack surface for weaknesses of the type cited by this CVE. Derived transitively via CVE→CWE→STIG over `controls_xwalks` (authoritative rows only).
Oracle Linux 8 (1 rule)
- V-248548 OL 8 must use a Linux Security Module configured to enforce limits on system services. via CWE-280