NifiApplication · Apache
CVE-2016-8748
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 · uneditedIn Apache NiFi before 1.0.1 and 1.1.x before 1.1.1, there is a cross-site scripting vulnerability in connection details dialog when accessed by an authorized user. The user supplied text was not being properly handled when added to the DOM.
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 confidenceApache NiFi before 1.0.1 and 1.1.1 contains a stored cross-site scripting (XSS) vulnerability in the connection details dialog. User-supplied input is directly inserted into the DOM without proper sanitization or output encoding, allowing an authenticated attacker to execute arbitrary JavaScript in the context of other authorized users' sessions.
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
NifiApplication
<= 1.0.0= 1.1.0CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 NiFi versionCheck the NiFi version by reviewing the release notes or inspecting the nifi.VERSION file in the NiFi installation directory. Alternatively, access the NiFi UI and look for the version number in the footer of any page, or query the /nifi-api/resources endpoint which returns version information in the response.Affected if The installed version is 1.0.0 or earlier, or exactly 1.1.0. Versions 1.0.1, 1.1.1, and later are NOT affected.
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Confirm NiFi web interface is accessibleVerify that the NiFi web UI port (default 8080 or 8443 for secure installations) is reachable. Check server listening ports and firewall rules to determine if the NiFi UI is network-accessible.Affected if The NiFi web interface is exposed and reachable by potential attackers, increasing exposure to the XSS flaw.
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Verify user authentication is enforcedReview NiFi configuration files (typically nifi.properties) to confirm that authentication is enabled. Check properties such as 'nifi.security.user.login.identity.provider' or 'nifi.security.needClientAuth'. Also verify that anonymous access is disabled if not explicitly intended.Affected if Anonymous access is permitted or authentication is disabled, allowing unauthenticated attackers to potentially interact with the vulnerable dialog.
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Inspect for suspicious connection configurationsIf you have access to the NiFi canvas, open the connection details dialog on any connection between processors. Review the connection name and any custom properties for unexpected script tags, JavaScript event handlers, or encoded payloads that may indicate exploitation.Affected if Stored XSS payloads exist in connection names or details, indicating the vulnerability has been exploited in your environment.
You are affected if your installed Apache NiFi version is 1.0.0 or earlier, or exactly 1.1.0, and the web interface is accessible to untrusted 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 dataUpgrade to Apache NiFi 1.0.1, 1.1.1, or later. As an immediate workaround, restrict access to trusted users only until the upgrade can be performed.
Fix this in Nifi
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-8748 — 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-2016-8748 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
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