# CVE-2026-4004: Task Manager <= 3.0.2 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'task_id' Parameter

> Authenticated attackers can execute arbitrary shortcodes in the Task Manager WordPress plugin due to missing capability checks and insufficient input validation.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-2rj3-m9rf-r3xp

## What is CVE-2026-4004?

CVE-2026-4004 is a medium-severity code injection vulnerability in eoxia Task Manager, published on 21 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Task Manager plugin for WordPress is vulnerable to arbitrary shortcode execution via the 'search' AJAX action in all versions up to, and including, 3.0.2. This is due to missing capability checks in the callback_search() function and insufficient input validation that allows shortcode syntax (square brackets) to pass through sanitize_text_field() and be concatenated into a do_shortcode() call. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes on the site by injecting shortcode syntax into parameters like 'task_id', 'point_id', 'categories_id', or 'term'.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-4004?


## How do I fix CVE-2026-4004?

No fix has been published for CVE-2026-4004 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4004 being exploited?

There is no known exploitation of CVE-2026-4004 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4004 and fix it if it is affected.

What it is: CVE-2026-4004 is a medium-severity code injection vulnerability in eoxia Task Manager, published on 21 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-4004 in the wild and no public exploit code.

Affected product: eoxia Task Manager. 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-2026-4004/ (Markdown: https://insights.sbomify.com/CVE-2026-4004/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4004
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4004
- OSV: https://osv.dev/vulnerability/CVE-2026-4004

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4004/
Summaries are generated and may contain mistakes; the official description above is the record.