CVE-2020-11416
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 · uneditedJetBrains Space through 2020-04-22 allows stored XSS in Chats.
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 confidenceJetBrains Space through April 2020 contains a stored cross-site scripting (XSS) vulnerability in its Chats functionality. The vulnerability allows malicious JavaScript to be embedded in chat messages and executed in the browsers of other users viewing those messages.
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<= 2020-04-22CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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 if JetBrains Space is installedCheck your systems for the JetBrains Space application. This is typically deployed as a web application. Look for the Space service/process or check your software inventory for JetBrains Space.Affected if JetBrains Space is present on the system
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Check the installed Space versionAccess the Space administration panel or use the Space API to retrieve the current version number. Compare it against the 2020-04-22 release date or the version string provided in your deployment documentation.Affected if The installed version is dated on or before April 22, 2020, or the version number is at or below the last vulnerable release
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Determine if Chats module is enabledLog into the Space administration console and navigate to the modules or features configuration section. Verify whether the Chats/Chats functionality is enabled for users.Affected if The Chats module is enabled and accessible to users
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Inspect chat messages for unescaped contentView existing chat messages in Space using a web browser. Examine the page source or use browser developer tools to inspect message elements. Look for chat messages that contain HTML or JavaScript code that renders literally instead of being displayed as text.Affected if Chat messages render unescaped HTML or script tags, indicating the XSS vulnerability is present
You are affected if JetBrains Space is installed with a version dated on or before 2020-04-22 and the Chats functionality is enabled, with chat messages displaying unescaped HTML or script content.
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 output encoding for all user-supplied content displayed in chat messages and apply input validation/sanitization on message submission. Content Security Policy headers can provide additional defense-in-depth.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-11416 — 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-2020-11416 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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