CVE-2026-45392 DOM-based XSS in Cribl Stream
Remote attackers can execute arbitrary JavaScript in authenticated users' browsers via crafted URLs in Cribl Stream.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-45392?
CVE-2026-45392 is a high-severity cross-site scripting vulnerability in Cribl Stream, published on 12 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
DOM-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.
Which versions are affected by CVE-2026-45392?
How do I fix CVE-2026-45392?
No fix has been published for CVE-2026-45392 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-45392 being exploited?
There is no known exploitation of CVE-2026-45392 in the wild and no public exploit code.
Sources
Also known as GHSA-6gcc-j9m6-4752.