# CVE-2026-90528: TDuckApp tduck-platform Form Write View index.vue cross site scripting

> Remote attackers can execute arbitrary scripts via the submitShowCustomPageContent argument in the Form Write View of tduck-platform.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-p97w-828x-xgcq

## What is CVE-2026-90528?

CVE-2026-90528 is a medium-severity cross-site scripting vulnerability in TDuckApp tduck-platform, published on 13 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A flaw has been found in TDuckApp tduck-platform up to 5.3. Affected by this vulnerability is an unknown functionality of the file tduck-front/src/views/form/write/index.vue of the component Form Write View. This manipulation of the argument submitShowCustomPageContent causes cross site scripting. The attack is possible to be carried out remotely. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-90528?


## How do I fix CVE-2026-90528?

No fix has been published for CVE-2026-90528 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90528 being exploited?

There is no known exploitation of CVE-2026-90528 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90528 and fix it if it is affected.

What it is: CVE-2026-90528 is a medium-severity cross-site scripting vulnerability in TDuckApp tduck-platform, published on 13 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-90528 in the wild and no public exploit code.

Affected product: TDuckApp tduck-platform. 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-2026-90528/ (Markdown: https://insights.sbomify.com/CVE-2026-90528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90528
- OSV: https://osv.dev/vulnerability/CVE-2026-90528

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90528/
Summaries are generated and may contain mistakes; the official description above is the record.