# CVE-2024-56359: Cross-site Scripting vulnerability through HyperLink cells in grist-core

> Attackers can compromise user accounts via malicious javascript links in HyperLink cells when clicked with a control modifier.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`)
- **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:** 20 Dec 2024
- **Updated:** 24 Dec 2024
- **Also known as:** GHSA-qv69-5cj2-53r9

## What is CVE-2024-56359?

CVE-2024-56359 is a high-severity cross-site scripting vulnerability in gristlabs grist-core, published on 20 Dec 2024. 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

grist-core is a spreadsheet hosting server. A user visiting a malicious document and clicking on a link in a HyperLink cell using a control modifier (meaning for example Ctrl+click) could have their account compromised, since the link could use the javascript: scheme and be evaluated in the context of their current page. This issue has been patched in version 1.3.2. Users are advised to upgrade. Users unable to upgrade should avoid clicking on HyperLink cell links using a control modifier in documents prepared by people they do not trust.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2024-56359?

It affects 1 product.


Products: Getgrist Grist-Core.

## How do I fix CVE-2024-56359?

No fix has been published for CVE-2024-56359 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-56359 being exploited?

There is no known exploitation of CVE-2024-56359 in the wild and no public exploit code.

## Other vulnerabilities in gristlabs grist-core

- [CVE-2026-24002](https://insights.sbomify.com/CVE-2026-24002/): pyodide sandbox option is insecure (critical 9.1)
- [CVE-2024-56357](https://insights.sbomify.com/CVE-2024-56357/): Cross-site Scripting vulnerability through custom widget URLs and form redirect URLs in grist-core (high 8.1)
- [CVE-2024-56358](https://insights.sbomify.com/CVE-2024-56358/): Cross-site Scripting vulnerability through svg attachment previews in grist-core (high 8.1)
- [CVE-2025-64752](https://insights.sbomify.com/CVE-2025-64752/): grist-core has path to server-side requests via websocket (medium 6.8)
- [CVE-2025-64753](https://insights.sbomify.com/CVE-2025-64753/): grist-core has insufficient access control in endpoints for comparisons between documents and versions (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-56359 and fix it if it is affected.

What it is: CVE-2024-56359 is a high-severity cross-site scripting vulnerability in gristlabs grist-core, published on 20 Dec 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-56359 in the wild and no public exploit code.

Affected product: gristlabs grist-core. 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-2024-56359/ (Markdown: https://insights.sbomify.com/CVE-2024-56359/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-56359
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-56359
- OSV: https://osv.dev/vulnerability/CVE-2024-56359

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-56359/
Summaries are generated and may contain mistakes; the official description above is the record.