# CVE-2026-85129 — Hoo Companion

> As of 2026-09-14, CVE-2026-85129 is a HIGH-severity vulnerability in Hoo Companion, CVSS v3.1 8.8, EPSS 0.2% (18.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-85129 as of 2026-09-14; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-14

## What is CVE-2026-85129?

The Hoo Companion WordPress plugin 1.0.2 does not have any authorisation or validation checks in one of its import features, and does not sanitise the data submitted to it before storing it as the active theme's settings, allowing unauthenticated attackers to inject arbitrary web scripts which will execute for anyone viewing the site, including administrators. The same request destroys the site's existing theme settings.

The record classifies CVE-2026-85129 under weakness class [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 22 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 18.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 7.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-13, last modified 2026-09-14

## Is CVE-2026-85129 being exploited?

Weaponised exploit code for CVE-2026-85129 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 42 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2026/CVE-2026-85129.md) (trickest)

## Affected products and versions

- **(vendor unspecified)**: Hoo Companion

## How to fix CVE-2026-85129

No vendor patch reference has been recorded for CVE-2026-85129 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-85129

No threat campaign in the Threadlinqs corpus currently references CVE-2026-85129, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-09-14. This product uses the NVD API but is not endorsed or certified by the NVD.

**Exploit and proof of concept**

- [wpscan.com — exploit](https://wpscan.com/vulnerability/a50f6ec1-4297-453e-b45f-6fd889b6b0d2/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-85129
Full detection coverage and IOCs for threats exploiting CVE-2026-85129 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp