Vulnary
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Critical· 9.8

CVE-2026-3655

The OTP Login With Phone Number, OTP Verification plugin for WordPress (versions 1.8.50 through 1.8.60) contains an authentication bypass vulnerability (CVE-2026-3655) with a CVSS score of 9.8 (Critical). Due to a flaw in the Firebase verification flow, an unauthenticated attacker can verify their own OTP session and supply a victim's phone number to gain access to any account, including administrators.

publishedMay 29, 2026
last modifiedJul 21, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
41th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 4, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

Users of the OTP Login With Phone Number, OTP Verification plugin for WordPress versions 1.8.50‑1.8.60.

02

Real-world impact

Attackers can impersonate any user whose phone number is stored in WordPress user meta, potentially gaining administrative privileges without credentials.

03

Why this severity

CVSS v3.1 base score 9.8 (Critical) reflects network‑adjacent, low‑complexity attack requiring no privileges or user interaction, with full impact on confidentiality, integrity, and availability.

04

What to do about it

no official fix yet

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources

05

Timeline

  1. May 29, 2026 · May 29, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 21, 2026 · 14d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →