CVE-2023-47107
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 · uneditedPILOS is an open source front-end for BigBlueButton servers with a built-in load balancer. The password reset component deployed within PILOS uses the hostname supplied within the request host header when building a password reset URL. It may be possible to manipulate the URL sent to PILOS users when so that it points to the attackers server thereby disclosing the password reset token if/when the link is followed. This only affects local user accounts and requires the password reset option to be enabled. This issue has been patched in version 2.3.0.
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 confidencePILOS password reset functionality uses the HTTP Host header to construct password reset URLs without validation, allowing Host header injection. Attackers can manipulate the Host header to cause password reset links to point to an attacker-controlled server, enabling token theft and account takeover of local users.
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>= 2.0.0, < 2.3.0CVSS 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
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 PILOS versionLocate the installed PILOS version by checking the package.json, docker image tag, or application metadata. Common locations include /opt/pilos/package.json, the Docker container label, or the application's about/status page.Affected if The installed version is >= 2.0.0 and < 2.3.0
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Verify password reset is enabledConfirm that the password reset functionality is available and enabled in the PILOS installation. Check the application configuration files or admin settings for password reset related options.Affected if Password reset functionality is enabled and the version is in the affected range
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Inspect Host header handlingReview the application or web server configuration to determine how the Host header is processed during password reset operations. Check if any Host header validation or whitelisting is configured.Affected if No strict Host header validation is configured and the version is in the affected range
A user is affected if PILOS version is 2.0.0 or higher but lower than 2.3.0 and the password reset feature is accessible without proper Host header validation in place.
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.
dbcve · scoped2.3.0
Upgrade to PILOS version 2.3.0 or later, which patches the Host header injection vulnerability. Alternatively, implement strict Host header validation at the web server or application level to reject unexpected hostnames.
2.3.0
- Backup the current PILOS installation and its database
- Review the official PILOS upgrade documentation for your current version
- Download PILOS version 2.3.0 from the official repository (github.com)
- Follow the upgrade instructions specific to your deployment method (Docker, direct installation, etc.)
- Verify the upgrade was successful by checking the PILOS version number
- Test the password reset functionality to confirm the vulnerability is remediated
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-47107 — 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-2023-47107 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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- Version or environment caveats, and links to real fixes
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