CVE-2026-56748 Authenticated RCE via Symlink Following in Cribl Stream Pack Git Import
Authenticated attackers can execute arbitrary code via symlink following in Cribl Stream's Git import feature.
- 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-2026-56748?
CVE-2026-56748 is a high-severity path traversal 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 validation of symbolic links in the Pack Git import feature in Cribl Stream before 4.18.2 allows a remote authenticated attacker with Pack import and pipeline preview permissions to execute arbitrary code as the Cribl server process via a crafted Git repository containing a symbolic link in the pack's functions directory.
Weakness: CWE-61
Which versions are affected by CVE-2026-56748?
It affects 1 product.
Products include Cribl Cribl Stream.
How do I fix CVE-2026-56748?
No fix has been published for CVE-2026-56748 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-56748 being exploited?
There is no known exploitation of CVE-2026-56748 in the wild and no public exploit code.
Other vulnerabilities in Cribl Stream
Sources
Also known as GHSA-xj69-cqwc-2w67.