Jabber GuestApplication · Cisco
CVE-2016-1311
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 · uneditedCross-site scripting (XSS) vulnerability in the management interface in Cisco Jabber Guest Server 10.6(8) allows remote attackers to inject arbitrary web script or HTML via the host tag parameter, aka Bug ID CSCuy08224.
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 confidenceThis is a reflected cross-site scripting (XSS) vulnerability in Cisco Jabber Guest Server 10.6(8) management interface. The host tag parameter in the management interface does not properly sanitize user-supplied input, allowing remote attackers to inject arbitrary JavaScript or HTML that executes in the context of the victim's browser session.
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
Jabber GuestApplication
= 10.6.8CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/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 if Cisco Jabber Guest is installedCheck for Cisco Jabber Guest Server installation directories, services, or consult software inventory. On Windows, look for C:\Program Files\Cisco Systems\Cisco Jabber Guest or check Windows Services for 'Cisco Jabber Guest' service.Affected if Cisco Jabber Guest Server software is present on the system
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Confirm the installed version is 10.6(8)Check the installed version through the management interface about page, Windows Programs and Features, or the application's executable version information. Compare your installed version to the affected range = 10.6(8) only.Affected if The installed version is exactly 10.6(8)
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Verify management interface accessibilityCheck network configuration to determine if the Cisco Jabber Guest management interface (typically ports 80/443 or configured ports) is accessible from untrusted networks. Review firewall rules and network ACLs restricting access to the management interface.Affected if The management interface is reachable from untrusted network segments or the internet
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Inspect HTTP response for host parameter handlingIf you have access to logs or can safely test, submit a request to the management interface with a benign test string in the host tag parameter and observe if it is reflected back unescaped in the HTTP response.Affected if User-supplied input in the host tag parameter is reflected without HTML encoding in the response
You are affected if Cisco Jabber Guest version 10.6(8) is installed and its management interface is network-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 dataApply the vendor patch when available. Until then, restrict network access to the management interface to trusted IP addresses only, or implement web application firewall rules to filter malicious input in the host tag parameter.
Fix this in Jabber Guest
Scoped from the published advisory
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-1311 — 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-2016-1311 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
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