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TI-2026-40921 Aliases CVE-2026-56748GHSA-xj69-cqwc-2w67

Authenticated RCE via Symlink Following in Cribl Stream Pack Git Import

Priority MEDIUM 41CWE-61Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00919 60th percentileScored 2026-11-07
Fix Fixed Cribl Stream (Cribl): 4.18.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CriblCribl Streambefore 4.18.24.18.2Patch availableCNA
  • Cribl Stream VendorCribl Affected before 4.18.2 Fixed in 4.18.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cribl:cribl_stream:*:*:*:*:*:*:*:*before 4.18.2VulnerableCribl
  • cpe:2.3:a:cribl:cribl_stream:*:*:*:*:*:*:*:* Versions before 4.18.2 Vulnerable ·Cribl

Remediation

  • Fix · CNA Cribl Stream (Cribl) Fixed in 4.18.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Cribl Stream 4.18.2

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-40920 Code Injection in JSON Pointer Processing Component in Cribl StreamPriority MEDIUM 41
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56748
  2. 2026-10-03 Alias added: GHSA-xj69-cqwc-2w67

References

Advisory 1

Other 1

  • TI-2026-40920 Code Injection in JSON Pointer Processing Component in Cribl Stream CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences