CVE-2022-39021
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 · uneditedU-Office Force login function has an Open Redirect vulnerability. An unauthenticated remote attacker can exploit this vulnerability to redirect user to arbitrary website.
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 confidenceU-Office Force login function contains an open redirect vulnerability allowing unauthenticated remote attackers to craft malicious URLs that redirect users to arbitrary external websites after login. This occurs due to insufficient validation of redirect parameters in the login flow.
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<= 20.50.7821dCVSS 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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Identify U-Office Force versionAccess the application's admin interface or check the installation directory for version information. Look for a version file, about page, or system info within the application.Affected if The installed version is 20.50.7821d or lower.
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Locate the login pageAccess the U-Office Force login URL (typically /login or the application's root endpoint) and identify any redirect or return parameter in the URL query string.Affected if The login page accepts a redirect parameter (common names include 'redirect', 'return', 'url', 'next', or 'goto').
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Test redirect parameter behaviorAppend a test redirect parameter with an external domain (e.g., ?redirect=https://example.com) to the login URL and observe whether the application allows the redirect after authentication without validation.Affected if The application allows redirection to arbitrary external domains without validating that the target is internal.
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Review server-side redirect logicExamine the application's configuration files or source code for the login handler to check if redirect parameters are validated against an allowlist or restricted to internal domains.Affected if No server-side validation exists to restrict redirect targets to trusted internal URLs.
The environment is affected if the installed U-Office Force version is 20.50.7821d or lower AND the login function accepts arbitrary redirect URLs to external sites without validation.
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 dataImplement strict validation of redirect parameters in the login function to ensure only trusted internal URLs are allowed (e.g., allowlist approach or verify the redirect target is within the application's domain).
- 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-2022-39021 — 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-2022-39021 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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