# CVE-2026-5630: assafelovic gpt-researcher Report API app.py cross site scripting

> Remote attackers can execute arbitrary scripts in the gpt-researcher Report API due to a cross-site scripting vulnerability in the backend server.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Apr 2026
- **Updated:** 6 Apr 2026
- **Also known as:** GHSA-35hg-m22v-mcj5

## What is CVE-2026-5630?

CVE-2026-5630 is a medium-severity cross-site scripting vulnerability in assafelovic gpt-researcher, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A flaw has been found in assafelovic gpt-researcher up to 3.4.3. The impacted element is an unknown function of the file backend/server/app.py of the component Report API. This manipulation causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been published and may be used. 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-2026-5630?


## How do I fix CVE-2026-5630?

No fix has been published for CVE-2026-5630 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5630 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5630 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5630 and fix it if it is affected.

What it is: CVE-2026-5630 is a medium-severity cross-site scripting vulnerability in assafelovic gpt-researcher, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, 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-2026-5630 exists.

Affected product: assafelovic gpt-researcher. 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-2026-5630/ (Markdown: https://insights.sbomify.com/CVE-2026-5630/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5630
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5630
- OSV: https://osv.dev/vulnerability/CVE-2026-5630

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-5630/
Summaries are generated and may contain mistakes; the official description above is the record.