CVE-2026-56748
Authenticated RCE via Symlink Following in Cribl Stream Pack Git Import
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 27, 2026
- Updated
- Jul 27, 2026
- Reserved
- Jun 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | Cribl |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Cribl |
Weaknesses
- CWE-61 UNIX Symbolic Link ('Symlink') Following
Affected Products
| Product | Versions |
|---|---|
Cribl StreamCribl |
|
References
- Cribl Stream 4.18.2 Security Fixesrelease-notes
- Cribl Trust Portalvendor-advisory
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