# CVE-2026-19806: Auth bypass in Support Genix – Helpdesk, AI Chatbot, Knowledge Base & Customer Support Ticketing System

> Authenticated attackers can bypass authentication and take over administrator accounts by exploiting weak encryption in the Support Genix WordPress plugin.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-28p5-rf4f-5qq9

## What is CVE-2026-19806?

CVE-2026-19806 is a high-severity authentication bypass vulnerability in devitemsllc Support Genix – Helpdesk, AI Chatbot, Knowledge Base & Customer Support Ticketing System, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Support Genix – Helpdesk, AI Chatbot, Knowledge Base & Customer Support Ticketing System plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account Takeover in all versions up to, and including, 1.4.52 via the `guest_ticket_login()` function and its `p` parameter. This is due to the site-wide AES-256-CBC encryption key being derived from only three two-digit `wp_rand(10, 99)` values and a Unix timestamp via `md5()` — yielding approximately 19.5 bits of entropy — combined with a deterministic IV derived from the password, no authentication tag on the ciphertext, and no capability check, nonce, or session validation on the publicly reachable `/sgnix/?p=<token>` endpoint. This makes it possible for authenticated attackers, with subscriber-level access and above, who can obtain a single legitimate guest ticket token as a known-plaintext oracle and bound the plugin activation timestamp, to exhaust the ~729,000-candidate keyspace entirely offline, recover the site-wide encryption key, and forge a self-consistent `{ticket_id, ticket_user}` token targeting any administrator-owned ticket. Submitting the forged token to the unprotected endpoint causes `wp_set_auth_cookie()` to be called for that administrator, granting the attacker full administrative access to the WordPress site.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-19806?


## How do I fix CVE-2026-19806?

No fix has been published for CVE-2026-19806 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19806 being exploited?

There is no known exploitation of CVE-2026-19806 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19806 and fix it if it is affected.

What it is: CVE-2026-19806 is a high-severity authentication bypass vulnerability in devitemsllc Support Genix – Helpdesk, AI Chatbot, Knowledge Base & Customer Support Ticketing System, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-19806 in the wild and no public exploit code.

Affected product: devitemsllc Support Genix – Helpdesk, AI Chatbot, Knowledge Base & Customer Support Ticketing System. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19806/ (Markdown: https://insights.sbomify.com/CVE-2026-19806/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19806
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19806
- OSV: https://osv.dev/vulnerability/CVE-2026-19806

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-19806/
Summaries are generated and may contain mistakes; the official description above is the record.