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CVE-2026-72538

PrefectHQ Prefect - Argument Injection

HIGH
8.8
CVSS Score
Published: August 11, 2026 at 11:07 AM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorPrefect

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Severity
HIGH8.8
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

Description

An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users to achieve remote code execution via the git_clone pull step branch field. The branch parameter is passed directly to git pull without sanitization, enabling injection of arbitrary git arguments. This represents a distinct code path from the incomplete fix applied for CVE-2026-5366 and allows command execution on the Prefect server.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Prefect· Prefecthq
90%
0 ≤ v ≤ 3.8.20

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/PrefectHQ/prefect

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHTuranSec
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-88

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