CVE-2021-20405
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 · uneditedIBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user to perform unauthorized activities due to improper encoding of output. IBM X-Force ID: 196183.
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 · low confidenceIBM Security Verify Information Queue versions 1.0.6 and 1.0.7 contains a vulnerability caused by improper output encoding. This likely represents a cross-site scripting (XSS) vulnerability where user-supplied input is not properly escaped before being rendered in web pages or API responses, potentially allowing attackers to inject malicious scripts that execute in the context of other users' sessions.
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= 1.0.6= 1.0.7CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 installed version of IBM Security Verify Information QueueLocate the product installation and check its version number. Common methods include reviewing installation documentation, checking the application about page, or using product-specific version detection commands if available.Affected if The installed version is 1.0.6 or 1.0.7 exactly.
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Confirm the product web interface or API is accessibleVerify that the web-based interface or API endpoints for IBM Security Verify Information Queue are exposed and operational. This may involve checking if the service is running and listening on expected ports.Affected if The web interface or API is accessible without additional authentication, or if authentication is present but user-supplied input can be submitted to the system.
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Determine if user-supplied input can reach output contextsIdentify any features that accept user input and render it back in responses, such as search fields, user profile fields, log message parameters, or API request/response handling.Affected if User-supplied data can be submitted and is subsequently displayed in web pages or API responses without visible encoding or sanitization.
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Check for existing Content Security Policy headersInspect HTTP responses from the application using browser developer tools or command-line tools to see if Content-Security-Policy headers are present and properly configured.Affected if CSP headers are absent, not configured, or allow unsafe-inline script execution, providing no defense-in-depth protection against XSS.
A user is affected if they have IBM Security Verify Information Queue version 1.0.6 or 1.0.7 installed and the application accepts user input that can be reflected in outputs without encoding.
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 dataApply proper output encoding/sanitization to all user-supplied data before rendering, implement Content Security Policy headers, and check IBM for available patches or updates. If no patch exists, disable or restrict the affected functionality as a temporary measure.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,768.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-20405 — 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-2021-20405 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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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