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CVE-2026-65570 – Authentication Bypass – Login with phone number WordPress Plugin <= 1.8.70

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Summary

CVE-2026-65570 is an unauthenticated authentication bypass (Authentication Bypass by Spoofing, CWE-290) in the "Login with phone number" WordPress plugin by Hamid Alinia, affecting versions 1.8.70 and earlier. An attacker can circumvent the plugin’s authentication mechanism without valid credentials, resulting in a HIGH severity issue (CVSS 8.1).

Technical details

  • Root cause: A flaw in the plugin’s authentication handling allows the login mechanism to be bypassed via spoofing (CWE-290 / CAPEC-151).
  • Trigger conditions: No authentication, privileges, or user interaction are required, though exploitation carries high attack complexity.
  • Attack vector: Network — the flaw is reachable remotely against the internet-facing WordPress site.
  • Impact: Successful exploitation compromises confidentiality, integrity, and availability, enabling an attacker to gain access as an unauthorized identity.

Affected software

  • Login with phone number WordPress plugin: all versions up to and including 1.8.70.

Severity

  • CVSS v3.1 base score: 8.1 (HIGH)
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Update the "Login with phone number" plugin to version 1.8.71 or later, which remediates the vulnerability.
  • If no patch can be applied: Restrict access to the WordPress site and its login functionality using network controls (such as a WAF or IP allowlisting), and monitor for anomalous authentication activity 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 HTTP response body: /wp-content/plugins/login-with-phone-number/

References

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How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

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.

2

Monitor for new CVEs

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.

3

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.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
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