Is CVE-2026-45392 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45392 being exploited in the wild.

How severe is CVE-2026-45392?

High severity, with a CVSS score of 8.7, published 12 May 2026.

Which products and versions are affected?

Cribl Stream before 4.17.1, versions prior to 4.17.1, Versions prior to 4.17.1.

Is there a fix for CVE-2026-45392?

A patch was published on 2026-04-22: Cribl Stream 4.17.1 released with security fixes. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-45392 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-45392?

Check whether you run Cribl Stream at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45392: Cribl Stream DOM-based XSS in web interface

CVE-2026-45392 · Severity: high · CVSS 8.7 · Published 2026-05-12

Cribl Stream is a data processing engine used to route and transform security and observability data. A vulnerability in its web interface could allow an attacker to execute malicious scripts in the browser of a logged-in user. If an administrator is tricked into clicking a malicious link, the attacker could potentially gain unauthorized access to the system, modify configurations, or steal sensitive session information.

Technologies: Cribl Stream. Vendors: Cribl.

Quick answers

Is CVE-2026-45392 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45392 being exploited in the wild.
How severe is CVE-2026-45392?: High severity, with a CVSS score of 8.7, published 12 May 2026.
Which products and versions are affected?: Cribl Stream before 4.17.1, versions prior to 4.17.1, Versions prior to 4.17.1.
Is there a fix for CVE-2026-45392?: A patch was published on 2026-04-22: Cribl Stream 4.17.1 released with security fixes. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-45392 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-45392?: Check whether you run Cribl Stream at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A DOM-based cross-site scripting (XSS) vulnerability exists in Cribl Stream versions prior to 4.17.1. The flaw stems from improper neutralization of user-supplied input during web page generation, allowing an attacker to inject malicious scripts into the Document Object Model (DOM). An attacker can exploit this by convincing an authenticated user to visit a specially crafted URL and interact with the page. Successful exploitation allows the execution of arbitrary JavaScript in the context of the victim's session, which can lead to session hijacking or unauthorized administrative actions. The vendor has addressed this in version 4.17.1.

Affected products

Cribl Stream before 4.17.1

Timeline

2026-04-22: patched: Cribl Stream 4.17.1 released with security fixes.
2026-05-12: advisory: CVE-2026-45392 published.

References

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