CVE-2021-37416
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 · uneditedZoho ManageEngine ADSelfService Plus version 6103 and prior is vulnerable to reflected XSS on the loadframe page.
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 confidenceReflected XSS vulnerability in Zoho ManageEngine ADSelfService Plus version 6103 and prior on the loadframe page. The vulnerability allows attackers to inject malicious scripts through unsanitized user input that gets reflected back in the web page response.
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< 6.1= 6.1CVSS 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.
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Determine installed ADSelfService Plus versionAccess the ADSelfService Plus admin console and navigate to the About or Product Information section to view the exact version and build number. Alternatively, check the product installation directory for version metadata or review the release version displayed on the login page.Affected if The version is 6103 or any version lower than 6103 (indicated as < 6.1 or = 6.1 in the affected versions)
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Verify loadframe page accessibilityAttempt to access the loadframe endpoint in your ADSelfService Plus web interface. This is typically found at a URL path containing '/loadframe' or similar. Confirm the page loads and accepts user input through URL parameters.Affected if The loadframe page is accessible and functional in your environment
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Identify user input reflection on loadframeSubmit a test payload containing a benign string (such as a unique alphanumeric identifier) through the loadframe page URL parameters. Inspect the page response source to verify if the submitted value is reflected back without sanitization.Affected if User-supplied input from URL parameters is reflected verbatim in the HTML response without encoding or validation
You are affected if your ADSelfService Plus version is 6103 or prior AND the loadframe page reflects unsanitized user input in its response.
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 data6.1
Upgrade to a patched version of ADSelfService Plus beyond 6103. Implement input validation and output encoding on the loadframe page, or apply WAF rules to block XSS payloads in the interim.
- 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-2021-37416 — 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-2021-37416 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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