CVE-2026-56748: Improper validation of symbolic links in the Pack Git import feature in Cribl Stream before 4.18.2 allows a re

Q: How do I fix CVE-2026-56748?

cribl stream: upgrade to 4.18.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-56748 being exploited?

CVE-2026-56748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-56748 affect?

CVE-2026-56748 affects cribl stream. Severity is high (CVSS 8.8). 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 proces

This month

HIGH 8.8UPGRADE

CVE-2026-56748 is a high-severity flaw (CVSS 8.8) affecting cribl stream. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-61
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): Cribl · Vendor: cribl

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-27 20:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

cribl cribl stream UPGRADE

Affected: < 4.18.2

Fixed in: 4.18.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cribl-stream || rpm -q cribl-stream || cribl-stream --version

2. UPGRADE to 4.18.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cribl-stream

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cribl-stream

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source

sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-56748?

cribl stream: upgrade to 4.18.2. Exact commands for each OS are on this page.

Is CVE-2026-56748 being exploited?

CVE-2026-56748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-56748 affect?

CVE-2026-56748 affects cribl stream. Severity is high (CVSS 8.8). 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 proces

How urgent is CVE-2026-56748?

Priority 46/100. High severity

Software pages

Git vulnerabilities

Related CVEs

CVE-2026-56747 HIGH 8.8 UPGRADE Improper control of generation of code in the JSON Pointer-to-accessor compiler in Cribl Stream before 4.18.2

References

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