CVE-2026-45393
High
Description
A vulnerability chain in Cribl Edge for Windows before 4.17.1 allows a local authenticated user to escalate privileges to NT AUTHORITY\SYSTEM. Incorrect default permissions on the Windows installer's authentication directory (CWE-276) expose a cryptographic secret used for JWT signing and password-hash derivation, enabling forgery of administrative API tokens. The forged token can then be used to invoke a pipeline function that reaches an OS command sink (CWE-78) running in the SYSTEM context.
SeverityHigh
CVSS7.8
Exploit probability—
ProductCribl Edge
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-276CWE-276CWE-78OS command injection
How to fix
Update
- Cribl Cribl Edge4.17.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Cribl Cribl Edge | v < 4.17.1 | 4.17.1 |
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