CVE-2026-45392
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 · uneditedDOM-based cross-site scripting (XSS) in Cribl Stream before 4.17.1 allows a remote attacker to execute arbitrary JavaScript in the browser of an authenticated user who is tricked into visiting a crafted URL and interacting with the 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 confidenceDOM-based XSS vulnerability in Cribl Stream versions before 4.17.1 allows authenticated remote attackers to inject and execute arbitrary JavaScript in victim browsers via crafted URLs. The vulnerability stems from improper sanitization of user-controlled input in the DOM, likely in a URL parameter that gets rendered without proper encoding.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/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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Verify Cribl Stream installationLocate the Cribl Stream installation directory. Common paths include /opt/cribl, /usr/local/cribl, or C:\Program Files\Cribl. Check for thecribl executable or service.Affected if Cribl Stream is found on the system
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Determine installed versionRun the command 'cribl version' from the installation bin directory, or check the version file typically located in the installation root (e.g., version.txt or package.json within the installation folder).Affected if The version number is lower than 4.17.1 (e.g., 4.17.0, 4.16.x, earlier versions)
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Confirm authentication is enabledCheck the cribl.yml or cribllocal.yml configuration file in the $CRIBL_HOME/etc or etc/default directory. Look for the 'auth' section to confirm authentication is configured and active.Affected if Authentication is configured and users can log in to the Cribl Stream interface
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Assess network exposureDetermine if the Cribl Stream web interface (default port 9000) is accessible over the network. Check firewall rules and listen address in configuration (look for 'listen' or 'http' settings in cribl.yml).Affected if The web interface is reachable from untrusted networks
A user is affected if Cribl Stream version is below 4.17.1 AND authentication is enabled AND the web interface is accessible, as the DOM-based XSS requires an authenticated user to click a crafted URL.
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 · scopedUpgrade Cribl Stream to version 4.17.1 or later. Additionally, implement Content Security Policy (CSP) headers and educate users about not clicking untrusted links to reduce the impact of social engineering attempts.
Cribl Stream 4.17.1 or later
- Upgrade Cribl Stream to version 4.17.1 or later to resolve the DOM-based XSS vulnerability.
- After upgrading, verify that the XSS vulnerability is no longer present by testing with the crafted URL that previously triggered the issue.
- Review release notes for version 4.17.1 to confirm all security fixes are applied.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-45392 — 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-2026-45392 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