# CVE-2026-28274: Initiative Vulnerable to Token Theft via Stored XSS in Document Uploads

> Attackers can steal authentication tokens and session cookies by uploading malicious HTML files that execute JavaScript in the application context.

- **Severity:** High 8.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N`)
- **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:** 26 Feb 2026
- **Updated:** 27 Feb 2026
- **Also known as:** GHSA-v38c-x27x-p584

## What is CVE-2026-28274?

CVE-2026-28274 is a high-severity cross-site scripting vulnerability in Morelitea initiative, published on 26 Feb 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

Initiative is a self-hosted project management platform. Versions of the application prior to 0.32.4 are vulnerable to Stored Cross-Site Scripting (XSS) in the document upload functionality. Any user with upload permissions within the "Initiatives" section can upload a malicious `.html` or `.htm` file as a document. Because the uploaded HTML file is served under the application's origin without proper sandboxing, the embedded JavaScript executes in the context of the application. As a result, authentication tokens, session cookies, or other sensitive data can be exfiltrated to an attacker-controlled server. Additionally, since the uploaded file is hosted under the application's domain, simply sharing the direct file link may result in execution of the malicious script when accessed. Version 0.32.4 fixes the issue.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-28274?

It affects 1 product.


Products: Morelitea Initiative.

## How do I fix CVE-2026-28274?

No fix has been published for CVE-2026-28274 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-28274 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-28274 exists.

## Other vulnerabilities in Morelitea initiative

- [CVE-2026-28275](https://insights.sbomify.com/CVE-2026-28275/): Initiative Vulnerable to Improper Session Invalidation (JWT Remains Valid) (high 8.1)
- [CVE-2026-28276](https://insights.sbomify.com/CVE-2026-28276/): Initiative Allows Unauthenticated Access to Uploaded Documents via Public /uploads/ Endpoint (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-28274 and fix it if it is affected.

What it is: CVE-2026-28274 is a high-severity cross-site scripting vulnerability in Morelitea initiative, published on 26 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-28274 exists.

Affected product: Morelitea initiative. 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-2026-28274/ (Markdown: https://insights.sbomify.com/CVE-2026-28274/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-28274
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28274
- OSV: https://osv.dev/vulnerability/CVE-2026-28274

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-28274/
Summaries are generated and may contain mistakes; the official description above is the record.