CVE-2026-7724
PrefectHQ prefect Webhook/Notification validate_restricted_url toctou
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-367 CWE-362 |
| Vendor | prefecthq |
| Product | prefect |
| Published | May 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
PrefectHQ / prefect
3.6.28.dev1
References
vuldb.com: https://vuldb.com/vuln/360900 vuldb.com: https://vuldb.com/vuln/360900/cti vuldb.com: https://vuldb.com/submit/807303 linear.app: https://linear.app/prefect/issue/OSS-7874/fix-dns-rebinding-toctou-bypass-in-validate-restricted-url github.com: https://github.com/PrefectHQ/prefect/pull/21591 gist.github.com: https://gist.github.com/nedlir/fa99777e8989414585d08c3625bf044a github.com: https://github.com/PrefectHQ/prefect/commit/7c70ac54a5e101431d83b9f2681ec88d5e0021ed github.com: https://github.com/PrefectHQ/prefect/releases/tag/3.6.28.dev2 github.com: https://github.com/PrefectHQ/prefect/
Credits
🔍 nedlir (VulDB User)