What is CVE-2026-3515?

CVE-2026-3515 is a high-severity vulnerability in Prefecthq Prefecthq/prefect, classified under Argument Injection. CVSS score: 8.5/10. Published 2026-05-24.

How severe is CVE-2026-3515?

High severity. CVSS v3 base score is 8.5 out of 10.

Vulnerability in Prefecthq Prefecthq/prefect

CVE-2026-3515

A vulnerability in the `GitHubRepository` block of the `prefect-github` integration in Prefect version 3.6.18 allows an attacker to inject arbitrary git command-line options via the `reference` field. The `reference` field is concatenated…

EPSS: 0.001 (28.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Prefecthq Prefecthq/prefect — versions unspecified

Weakness classification (CWE)

CWE-88 — Argument Injection

References

security@huntr.dev

Frequently asked questions

What is CVE-2026-3515?: CVE-2026-3515 is a high-severity vulnerability in Prefecthq Prefecthq/prefect, classified under Argument Injection. CVSS score: 8.5/10. Published 2026-05-24.
How severe is CVE-2026-3515?: High severity. CVSS v3 base score is 8.5 out of 10.