CVE-2024-41256
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedDefault 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe ShareProofVerifier function in filestash v0.4 contains a default configuration that disables TLS certificate verification when sending email verification codes. This allows an attacker positioned on the network path between the mail server and the application to intercept sensitive email content via a man-in-the-middle attack, potentially accessing user verification codes and associated account data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 0.4CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Filestash versionRun 'filestash --version' or inspect the running container/image tag to determine if the installed version is 0.4 or lowerAffected if Version is 0.4 or lower (any version up to and including 0.4)
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Locate the ShareProofVerifier configurationSearch configuration files (commonly in /config, /etc/filestash, or the data directory) for settings related to 'shareproof', 'share_proof', or 'verification' functionsAffected if ShareProofVerifier function is enabled or configured in the environment
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Inspect email TLS certificate verification settingsOpen the email or SMTP configuration file and locate settings controlling TLS or certificate verification - look for flags like 'tls_verify', 'ssl_verify', 'insecure', or similar that control certificate validationAffected if TLS certificate verification is explicitly disabled (set to false, 0, or insecure mode) or absent/defaults to disabled for the ShareProofVerifier email sending
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Verify email sending configuration for ShareProofVerifierCheck if ShareProofVerifier is configured to send emails and which SMTP/mail server settings it uses - examine whether the configuration inherits or overrides the global email TLS settingsAffected if ShareProofVerifier sends email verification codes and the TLS certificate verification setting is disabled or not explicitly enforced to true
A user is affected if they run Filestash version 0.4 or lower AND have ShareProofVerifier enabled with email sending, AND the TLS certificate verification is disabled or not explicitly enforced in the configuration.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataEnable and enforce TLS certificate verification in the email configuration for the ShareProofVerifier function, ensuring proper certificate validation is performed when connecting to the mail server.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-41256 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-41256 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data