WordPress Login with phone number: Broken authentication
Summary
The WordPress plugin Login with phone number up to and including version 1.8.78 contains a broken authentication flaw (CWE-1390, CVSS 8.8 per the CNA). According to Patchstack, an attacker can bypass the login system or log in as other users without their password. Patchstack lists the required privilege as Subscriber, so a low-privilege account may be needed, but the exact precondition is not confirmed.
Affected
- Login with phone number WordPress plugin (package login-with-phone-number), versions up to and including 1.8.78
- Start version not specified (n/a), so all versions up to 1.8.78 are treated as affected
Fixed in
- Version 1.8.79 (per Patchstack and the CNA solution note)
- Note: the 1.8.78 changelog describes separate security fixes; confirm the fixed version against the Patchstack advisory
Workaround
- Unknown. No documented workaround found.
- Interim measure: Patchstack has issued a mitigation rule that blocks attacks until the plugin is updated, if a Patchstack mitigation service is in use.
Exploitation
- Not known to be exploited in the wild (OffSeq, Strix). CISA SSVC: exploitation none, automatable no, technical impact partial.
- Patchstack rates it as high priority and expects exploitation.
- No public proof of concept found (VulDB).
Our recommendation
- Find all WordPress sites that run this plugin.
- Update the plugin to version 1.8.79 or later as soon as possible.
- Review successful logins, especially for accounts using phone login, for the period before the update.
- Check the Patchstack and NVD pages again, as the record is still under analysis.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Patchstack advisory: Broken Authentication in Login with phone number patchstack.com
- VulDB entry 428362 vuldb.com
- OffSeq Radar: CVE-2026-115967 radar.offseq.com
- Strix: CVE-2026-115967 www.strix.ai
- GitHub release 1.8.79 github.com
- Plugin developer repository (idehweb) github.com
- WordPress.org plugin page wordpress.org
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 09:22.
Original description (NVD)
Weak Authentication vulnerability in Hamid Alinia Login with phone number login-with-phone-number allows Authentication Abuse.This issue affects Login with phone number: from n/a through 1.8.78.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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