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CVE-2026-7724

23
FAUCET Score

A vulnerability has been found in PrefectHQ prefect up to 3.6.28.dev1. Affected by this vulnerability is the function validate_restricted_url of the component Webhook/Notification. The manipulation leads to time-of-check time-of-use. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.6.28.dev2 addresses this issue. The identifier of the patch is 7c70ac54a5e101431d83b9f2681ec88d5e0021ed. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

First published: May 4, 2026Last modified: May 5, 2026

Impacted Technologies

VendorProductVersion(s)CPE
PrefectHQPrefect
3.6.28.dev1CNA affected

CVSS Data

CVSS version used by this source: 4.0

1.3LOW

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 16th percentile among its peer group of 1,428 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: prefectFixed in: 3.6.28.dev2

Vendor Advisories (1)

pipGHSA-p3pq-hxmr-vqqrlow

Prefect SSRF Bypass via DNS Rebinding in validate_restricted_url

May 4, 2026

References

gist.github.com / nedlir/fa99777e8989414585d08c3625bf044a
github.com / PrefectHQ/prefect
github.com / PrefectHQ/prefect/commit/7c70ac54a5e101431d83b9f2681ec88d5e0021ed
github.com / PrefectHQ/prefect/pull/21591
github.com / PrefectHQ/prefect/releases/tag/3.6.28.dev2
linear.app / prefect/issue/OSS-7874/fix-dns-rebinding-toctou-bypass-in-validate-restricted-url
vuldb.com / submit/807303
vuldb.com / vuln/360900
vuldb.com / vuln/360900/cti