CVE-2026-15985Network attack vector

Account takeover via unvalidated Firebase OTP login

Published Aug 26, 2026 · Updated Aug 26, 2026

Authentication bypass in RadiusTheme Classified Listing Mobile Number Verification 1.6.0 and earlier allows remote attackers to take over accounts. process_otp_login() accepts attacker-supplied OTP and UID values without server-side Firebase OTP validation, then authenticates the user associated with the supplied phone number. The Firebase gateway and OTP login must be enabled, and the target phone number must be known or guessed; a registered administrator number yields administrator access.

CVSS severity8.1
High
EPSS probability0.33%
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 RadiusTheme Classified Listing Mobile Number Verification 1.6.0 and earlier allows remote attackers to take over accounts. process_otp_login() accepts attacker-supplied OTP and UID values without server-side Firebase OTP validation, then authenticates the user associated with the supplied phone number. The Firebase gateway and OTP login must be enabled, and the target phone number must be known or guessed; a registered administrator number yields administrator access.

The record

CVE
CVE-2026-15985
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
RadiusTheme
Product
Classified Listing Mobile Number Verification Addon
Classifications
CWE-289, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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=0 <=1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RadiusTheme · Classified Listing Mobile Number Verification Addonversion=0 <=1.6.0

Published CVSS scores

8.1WordfenceCVSS:3.1/AV:N/AC:H/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-289Authentication Bypass by Alternate Name
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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