CVE-2026-3655Network attack vector

Unauthenticated account takeover via unbound Firebase session

Published May 29, 2026 · Updated May 29, 2026

Authentication bypass in OTP Login With Phone Number, OTP Verification 1.8.50 through 1.8.60 allows remote attackers to take over accounts. The lwp_ajax_register handler accepts a request-supplied phone number after idehweb_lwp_activate_through_firebase validates a Firebase session without comparing Firebase's phoneNumber value. Exploitation requires Firebase authentication and a victim account with a stored phone number, and successful requests can create an authenticated session for that account.

CVSS severity9.8
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in OTP Login With Phone Number, OTP Verification 1.8.50 through 1.8.60 allows remote attackers to take over accounts. The lwp_ajax_register handler accepts a request-supplied phone number after idehweb_lwp_activate_through_firebase validates a Firebase session without comparing Firebase's phoneNumber value. Exploitation requires Firebase authentication and a victim account with a stored phone number, and successful requests can create an authenticated session for that account.

The record

CVE
CVE-2026-3655
Published
May 29, 2026
Updated
May 29, 2026
Vendor
Hamid Alinia
Product
OTP Login With Phone Number, OTP Verification
Classifications
CWE-287, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2026CVE publishedPublication date reported by the CVE source.
  2. May 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.8.50 <=1.8.60

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hamid Alinia · OTP Login With Phone Number, OTP Verificationversion=1.8.50 <=1.8.60

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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