CVE-2023-48379
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 · uneditedSoftnext Mail SQR Expert is an email management platform, it has inadequate filtering for a specific URL parameter within a specific function. An unauthenticated remote attacker can perform Blind SSRF attack to discover internal network topology base on URL error response.
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 · moderate confidenceSoftnext Mail SQR Expert has inadequate filtering for a specific URL parameter in a specific function, allowing unauthenticated remote attackers to perform Blind SSRF attacks. Attackers can discover internal network topology by manipulating the URL parameter and analyzing error responses.
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<= 230330CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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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Identify installed version of Softnext Mail SQR ExpertLocate the version information for your Softnext Mail SQR Expert installation (typically found in the product about page, system info, or installation directory)Affected if The installed version is 230330 or earlier (any version <= 230330)
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Confirm the vulnerable function is accessibleIdentify whether the specific function with the URL parameter is exposed and accessible to unauthenticated users on your installationAffected if The vulnerable URL parameter function is reachable without authentication
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Check for SSRF indicators in application logsReview application and web server logs for unusual error messages related to URL fetching, connection attempts to internal resources, or repeated connection failuresAffected if Logs show attempted or successful connections to internal IPs or non-public domains originating from the application
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Monitor for unexpected outbound network behaviorInspect network traffic or firewall logs for outbound connections initiated by the Mail SQR Expert service to internal network addressesAffected if The application is making outbound connections to internal/private IP addresses that were not explicitly configured
You are affected if your Softnext Mail SQR Expert version is <= 230330 AND the vulnerable URL parameter function is accessible to unauthenticated users.
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 dataImplement strict input validation and whitelist-based filtering for URL parameters. Validate that URLs point to allowed domains/IPs and consider disabling or restricting URL-fetching functionality from user input.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48379 — 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-2023-48379 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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