Security readout for executives and security teams
Plain-English summary
This issue affects an old MyBB two-factor authentication plugin. A malicious site could trick a logged-in forum user into sending a request that activates or deactivates the plugin setting. The most concerning outcome is disabling 2FA for the targeted account, reducing account protection.
Executive priority
Treat this as a targeted account-protection weakness, not a broad remote compromise signal. Prioritize forums using this old plugin, especially administrator or privileged accounts where disabling 2FA increases takeover risk.
Technical view
CVE-2019-12363 is a CSRF flaw in the JN-Jones MyBB-2FA plugin through 2014-11-05. The vulnerable state-changing user control action can be forged to activate or deactivate 2FA. No CVSS, CWE, or structured affected CPE data is provided in the source bundle.
Likely exposure
Exposure is likely limited to MyBB forums that installed the JN-Jones MyBB-2FA plugin versioned through 2014-11-05. The bundle does not identify broader MyBB core exposure or other 2FA plugins.
Exploitation context
The sources describe a forged-request scenario requiring a targeted logged-in user context. The CVE is not listed as KEV, and the supplied bundle does not provide evidence of active exploitation in the wild.
Researcher notes
Evidence is narrow but specific: the CVE names the plugin, date range, and 2FA state-changing actions. Missing items include CVSS, CWE, CPEs, confirmed patch version, and exploitation telemetry. Avoid assuming MyBB core is affected.
Mitigation direction
- Identify whether the JN-Jones MyBB-2FA plugin is installed.
- Check vendor or community guidance for patched or maintained alternatives.
- Remove or replace unmaintained 2FA plugins where acceptable.
- Require CSRF protection on 2FA activate and deactivate actions.
- Monitor for unexpected user 2FA deactivation events.
Validation and detection
- Inventory MyBB plugin files and administrator plugin listings.
- Confirm the plugin version or release date is not within the affected range.
- Review activate and deactivate code paths for CSRF token enforcement.
- Audit recent account security setting changes for unexpected 2FA disablement.
- Validate controls in a non-production forum copy.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-12363 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://community.mybb.com/thread-162369.htmlCVE reference · x_refsource_MISC
- https://seekurity.com/blog/advisories/mybb-two-factor-authentication-extension-vulnerabilities/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.