# CVE-2026-105329: TallCMS PluginManager ThemeManager.php code injection

> Remote attackers can inject code into TallCMS via the ThemeManager component, potentially leading to full system compromise.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** 5 Oct 2026
- **Updated:** 7 Oct 2026
- **Also known as:** GHSA-pr2m-rphr-6wqj

## What is CVE-2026-105329?

CVE-2026-105329 is a medium-severity code injection vulnerability in TallCMS, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was determined in TallCMS up to 4.8.0. This affects an unknown function of the file packages/tallcms/cms/src/Filament/Pages/ThemeManager.php of the component PluginManager. Executing a manipulation can lead to code injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This patch is called fdc18f4c6a36134f8986ca1d7e4e97092e3deb93. It is best practice to apply a patch to resolve this issue.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-105329?


## How do I fix CVE-2026-105329?

No fix has been published for CVE-2026-105329 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-105329 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105329 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105329 and fix it if it is affected.

What it is: CVE-2026-105329 is a medium-severity code injection vulnerability in TallCMS, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105329 exists.

Affected product: TallCMS. 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-2026-105329/ (Markdown: https://insights.sbomify.com/CVE-2026-105329/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105329
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105329
- OSV: https://osv.dev/vulnerability/CVE-2026-105329

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105329/
Summaries are generated and may contain mistakes; the official description above is the record.