TI-2026-13387 Aliases CVE-2026-15985 GHSA-xhwf-539m-8chw

Classified Listing - Mobile Number Verification <= 1.6.0 - Unauthenticated Authentication Bypass via Firebase OTP Login

LOW 38CWE-289Published 2026-08-26 · Updated 2026-08-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Classified Listing - Mobile Number Verification plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.6.0. This is due to missing server-side Firebase OTP validation in the process_otp_login() function. This makes it possible for unauthenticated attackers to authenticate as any user with a phone number registered in the plugin's phone table by submitting an arbitrary OTP code and UID through the Firebase OTP login flow. Successful exploitation requires OTP login to be enabled with Firebase selected as the verification gateway, and requires the attacker to know or guess the target account's registered phone number. Administrator account takeover is possible if an administrator account has a phone number registered in the plugin.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00542 45th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
RadiusTheme	Classified Listing - Mobile Number Verification	up to 1.6.0	—	No fix listed	CNA

Classified Listing - Mobile Number Verification VendorRadiusTheme Affected up to 1.6.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-15985
2026-10-03 Alias added: GHSA-xhwf-539m-8chw

References

Other 2

TI-2022-02454 Classima < 2.1.11 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
TI-2022-26399 WordPress Plugin Testimonial Slider and Showcase 2.2.6 Stored XSS CVSS 4.0MEDIUM 5.1
TI-2024-08572 Team Members Showcase < 4.4.2 - Editor+ Stored XSS CVSS 3.1MEDIUM 4.8
TI-2024-03390 The Post Grid < 7.5.0 - Editor+ Stored XSS via Grid Creation CVSS 3.1MEDIUM 4.8
TI-2024-01623 Testimonial Slider < 2.3.7 - Author+ Settings Update CVSS 3.1MEDIUM 4.3
TI-2026-67962 SQL injection in RadiusTheme Radius Booking WordPress plugin CVSS 3.1CRITICAL 9.3

See all 73 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences