CVE-2026-56747 Code Injection in JSON Pointer Processing Component in Cribl Stream
Remote authenticated attackers with edit privileges can execute arbitrary JavaScript on Cribl Stream servers via crafted configuration values.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56747?
CVE-2026-56747 is a high-severity code injection vulnerability in Cribl Stream, published on 27 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper control of generation of code in the JSON Pointer-to-accessor compiler in Cribl Stream before 4.18.2 allows a remote authenticated attacker with edit privileges to execute arbitrary JavaScript on the server via a crafted database connection identifier or pack configuration value.
Weakness: CWE-94
Which versions are affected by CVE-2026-56747?
It affects 1 product.
Products include Cribl Cribl Stream.
How do I fix CVE-2026-56747?
No fix has been published for CVE-2026-56747 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-56747 being exploited?
There is no known exploitation of CVE-2026-56747 in the wild and no public exploit code.
Other vulnerabilities in Cribl Stream
Sources
Also known as GHSA-c2q2-868h-6pj2.