CVE-2023-26100
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 Progress Flowmon before 12.2.0, an application endpoint failed to sanitize user-supplied input. A threat actor could leverage a reflected XSS vulnerability to execute arbitrary code within the context of a Flowmon user's web browser.
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 confidenceFlowmon before version 12.2.0 contains a reflected XSS vulnerability where an application endpoint fails to properly sanitize user-supplied input. An attacker can craft malicious URLs containing JavaScript payloads that, when clicked by a victim, execute within the context of the user'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< 12.2.0CVSS 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/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.
-
Determine Flowmon OS versionLog into the Flowmon CLI or administrative web interface and locate the version information, typically found in Help > About or via command 'flowmon -version'Affected if Installed version is below 12.2.0
-
Confirm web interface exposureVerify that the Flowmon web management interface is accessible from the network by checking listening ports (typically 443 or 8443) and attempting access via browserAffected if Web interface is accessible and version is below 12.2.0
-
Identify user-accessible endpointsReview the Flowmon web application to document which endpoints handle user-supplied parameters in URLs (such as search, navigation, or parameter-driven pages)Affected if User-facing endpoints exist and version is below 12.2.0
Environment is affected if Flowmon OS version is below 12.2.0 and the web management interface is accessible to users or attackers
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 · scoped12.2.0
Upgrade to Flowmon version 12.2.0 or later. Apply context-aware output encoding and implement Content Security Policy headers to mitigate XSS risks.
Flowmon OS 12.2.0 or later
- Back up the current Flowmon OS configuration and ensure you have a rollback plan in case of issues
- Download Flowmon OS version 12.2.0 or later from the official Flowmon support portal (support.kemptechnologies.com or www.flowmon.com)
- Log in to the Flowmon administrative interface
- Navigate to the system update or upgrade section
- Apply the downloaded upgrade package following the on-screen instructions
- After the upgrade completes, verify the system is operational and the web interface is accessible
- Confirm the version number reflects 12.2.0 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 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 $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-26100 — 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-2023-26100 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data