# Statamic Vulnerable to CSV formula injection in form submission exports

Advisory record · `GHSA-h77m-qrj7-jxcw`

- **Identifiers:** `GHSA-h77m-qrj7-jxcw` · `CVE-2026-54243` · `PKSA-q7zp-ytbf-kmf9`
- **State:** Confirmed
- **Severity:** CVSS 6.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-1236](https://cwe.mitre.org/data/definitions/1236.html)
- **Tags:** [Other injection](https://agentprime.io/advisories/tag/injection.md)
- **Published:** 26 Jun 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 26 Jun 2026, 23:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `statamic/cms` (Packagist): affected `>=6.0.0, <6.20.1 || <5.73.24`; fixed in `6.20.1`, `5.73.24`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Statamic CMS (Packagist statamic/cms) versions before 5.73.24 and versions from 6.0.0 before 6.20.1 are affected. Form submission values were not neutralized for spreadsheet formula characters when exported to CSV, so a value beginning with a character such as =, +, - or @ could run as a formula when a Control Panel user opens the export. An anonymous front-end visitor can supply the value, and it is triggered when an authorized user opens the export in a spreadsheet application, which affects that application rather than the Statamic server. Upgrade to 5.73.24 or 6.20.1.

Written 31 Oct 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.1 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0034, the 27th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:00 UTC: First seen by agentprime
- 31 Oct 2026, 14:00 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-h77m-qrj7-jxcw)

## Sources

- [GitHub Advisory Database: GHSA-h77m-qrj7-jxcw](https://github.com/advisories/GHSA-h77m-qrj7-jxcw)
- [OSV: GHSA-h77m-qrj7-jxcw](https://osv.dev/vulnerability/GHSA-h77m-qrj7-jxcw)
- <https://github.com/statamic/cms/security/advisories/GHSA-h77m-qrj7-jxcw>
- <https://github.com/statamic/cms>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-h77m-qrj7-jxcw>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-h77m-qrj7-jxcw/>. Everything for agents: <https://agentprime.io/llms.txt>.