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CVE-2026-15372 – Two-Factor Authentication Bypass – WP 2FA WordPress Plugin before 4.1.0

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Summary

CVE-2026-15372 is a two-factor authentication bypass vulnerability in the WP 2FA WordPress plugin (versions before 4.1.0). The plugin fails to properly validate the secondary authentication factor when certain authentication methods are used during login, allowing an attacker who already knows a user’s password to bypass 2FA and gain full account access, including administrator accounts. It is rated High severity (CVSS 7.5).

Technical details

  • Root cause: Improper Authentication (CWE-287) — the plugin does not properly validate the secondary authentication factor when certain authentication methods are selected during login.
  • Trigger conditions: An attacker must possess valid credentials (username and password) for a target account.
  • Attack vector: Network — exploited remotely through the login flow, requiring no privileges and no user interaction.
  • Impact: Circumvention of the two-factor protection mechanism, enabling account takeover up to and including administrator-level accounts.

Affected software

  • WP 2FA (Two-factor authentication for WordPress): all versions before 4.1.0.
  • Fixed in version 4.1.0.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Update the WP 2FA plugin to version 4.1.0 or later.
  • If no patch can be applied: Restrict network access to WordPress login endpoints (for example via IP allow-listing or a web application firewall), enforce strong and unique passwords, and monitor for anomalous logins to accounts protected by 2FA until the update can be deployed.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Raw response body: /wp-content/plugins/wp-2fa/

References

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1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

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Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

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Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

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