CVE-1999-0758
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 · uneditedNetscape Enterprise 3.5.1 and FastTrack 3.01 servers allow a remote attacker to view source code to scripts by appending a %20 to the script's URL.
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 confidenceNetscape Enterprise 3.5.1 and FastTrack 3.01 servers contain an information disclosure vulnerability where appending '%20' (URL-encoded space) to script URLs causes the server to return the unprocessed source code instead of executing the script. This allows remote attackers to view sensitive script contents including potential credentials, business logic, and database queries.
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= 3.5.1= 3.01CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/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 the web server product and versionCheck the server banners, HTTP headers, or consult server documentation to determine if the web server is Netscape Enterprise Server or Netscape Fasttrack Server. Look for version strings in server responses or configuration files.Affected if The server is Netscape Enterprise Server version 3.5.1 or Netscape Fasttrack Server version 3.01 exactly
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Verify scripts are enabled and accessibleCheck the server configuration for enabled script handlers (CGI, NSAPI, or other server-side script execution modes). Confirm that script directories are accessible via HTTP.Affected if Server-side scripts are enabled and accessible over the network
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Test for source disclosure with URL-encoded spaceMake an HTTP GET request to a known script URL (such as a CGI script or server-side include) and append '%20' to the end of the URL path. For example: GET /scripts/example.cgi%20 HTTP/1.1Affected if The server returns the raw source code of the script instead of executing it or returning a 404 error
You are affected if you are running Netscape Enterprise Server 3.5.1 or Netscape Fasttrack Server 3.01 with scripts enabled and the server returns unprocessed script source code when '%20' is appended to script URLs.
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 dataUpgrade to a supported Netscape server version or migrate to a modern web server platform. If the affected servers must remain in operation, isolate them behind a firewall and disable any scripts that may expose sensitive information.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-1999-0758 — 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-1999-0758 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