# CVE-2026-18788: Trippo ResponsiveFilemanager dialog.php unrestricted upload

> Remote attackers can upload malicious files via dialog.php in Trippo ResponsiveFilemanager, potentially leading to code execution on the server.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-fpqv-x64q-rhgj

## What is CVE-2026-18788?

CVE-2026-18788 is a medium-severity vulnerability in Trippo ResponsiveFilemanager, published on 4 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security flaw has been discovered in Trippo ResponsiveFilemanager up to 9.14.0. The impacted element is an unknown function of the file filemanager/dialog.php. The manipulation results in unrestricted upload. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-18788?


## How do I fix CVE-2026-18788?

No fix has been published for CVE-2026-18788 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18788 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18788 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18788 and fix it if it is affected.

What it is: CVE-2026-18788 is a medium-severity vulnerability in Trippo ResponsiveFilemanager, published on 4 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18788 exists.

Affected product: Trippo ResponsiveFilemanager. 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-2026-18788/ (Markdown: https://insights.sbomify.com/CVE-2026-18788/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18788
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18788
- OSV: https://osv.dev/vulnerability/CVE-2026-18788

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18788/
Summaries are generated and may contain mistakes; the official description above is the record.