CVE-2026-7724Public exploitNetwork attack vector

Authenticated SSRF via DNS rebinding race

Published May 4, 2026 · Updated May 4, 2026

SSRF in Prefect 3.6.28.dev1 allows remote authenticated users to access internal services through webhook or notification URLs. validate_restricted_url approves a public hostname before the HTTP client resolves it again, allowing DNS rebinding to select a private address at connection time. Exploitation requires permission to configure and trigger a webhook or notification plus control of DNS timing; resulting requests can reach internal services available to the Prefect process.

CVSS severity5.0
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Prefect 3.6.28.dev1 allows remote authenticated users to access internal services through webhook or notification URLs. validate_restricted_url approves a public hostname before the HTTP client resolves it again, allowing DNS rebinding to select a private address at connection time. Exploitation requires permission to configure and trigger a webhook or notification plus control of DNS timing; resulting requests can reach internal services available to the Prefect process.

The record

CVE
CVE-2026-7724
Published
May 4, 2026
Updated
May 4, 2026
Vendor
Prefect Technologies, Inc.
Product
Prefect
Classifications
CWE-362, CWE-367, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.6.28.dev1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Prefect Technologies, Inc. · Prefectversion=3.6.28.dev1

Published CVSS scores

4.6VulDBAV:N/AC:H/Au:S/C:P/I:P/A:P
1.3VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.0VulDBCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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