CVE-2020-13863
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 · uneditedThe SAS portal of Mitel MiCollab before 9.1.3 could allow an attacker to access user data by performing a header injection in HTTP responses, due to the improper handling of input parameters. A successful exploit could allow an attacker to access user information.
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 confidenceA header injection vulnerability in the Mitel MiCollab SAS portal allows attackers to inject malicious content into HTTP response headers via improperly sanitized input parameters. This can lead to cross-site scripting (XSS) attacks or HTTP response splitting, ultimately enabling unauthorized access to user information.
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< 9.1.3CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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 Mitel MiCollab installationLocate the MiCollab installation directory or running service on the system. Check common installation paths or use system inventory tools to find MiCollab components.Affected if MiCollab software is present on the system
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Determine installed MiCollab versionAccess the MiCollab administration interface or check version information in the installation directory. Look for version details in system files, About pages, or administrative consoles.Affected if The installed version is lower than 9.1.3 (e.g., 9.0.x, 8.x, or earlier releases)
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Verify SAS portal accessibilityConfirm that the SAS portal component is accessible on the network. Check if port 443/8443 or configured SAS portal URLs respond to requests.Affected if SAS portal is exposed and accessible without additional authentication or is enabled in the configuration
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Inspect HTTP response headersSend a request to the SAS portal endpoint and capture the response headers using a tool like curl -I or browser developer tools. Examine headers for unexpected values or evidence of injection.Affected if Response headers contain unsanitized user input or show signs of header injection
The environment is affected if Mitel MiCollab with a version below 9.1.3 is installed and the SAS portal component is enabled and accessible.
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 data9.1.3
Upgrade Mitel MiCollab to version 9.1.3 or later, which contains the vendor patch addressing the improper input validation in the SAS portal component.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-13863 — 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-2020-13863 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
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