CVE-2023-6022Public exploitNetwork attack vector

Code execution via tokenless state-changing API requests

Published Nov 16, 2023 · Updated Aug 2, 2024

CSRF in the self-hosted Prefect API before 2.16.5 allows remote attackers to alter block documents through a victim's browser. The API accepts state-changing POST requests without a per-client CSRF token, allowing forged requests to replace a LocalProcess block's command. A victim must visit attacker-controlled content while the unauthenticated API is browser-reachable; a later block run executes the substituted command and can expose secrets or run code.

CVSS severity8.8
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

CSRF in the self-hosted Prefect API before 2.16.5 allows remote attackers to alter block documents through a victim's browser. The API accepts state-changing POST requests without a per-client CSRF token, allowing forged requests to replace a LocalProcess block's command. A victim must visit attacker-controlled content while the unauthenticated API is browser-reachable; a later block run executes the substituted command and can expose secrets or run code.

The record

CVE
CVE-2023-6022
Published
Nov 16, 2023
Updated
Aug 2, 2024
Vendor
Prefect Technologies, Inc.
Product
Prefect
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.16.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Prefect Technologies, Inc. · Prefectversion=unspecified <2.16.5

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo