GitHub Advisoryadvisory · PyPI
GHSA-p3pq-hxmr-vqqr Prefect SSRF Bypass via DNS Rebinding in validate_restricted_url
LOW
Official page ↗
- Aliases
- CVE-2026-7724
- Ecosystem
- PyPI
- Packages
- prefect
- Severity
- Low
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-362
- Reviewed
- 2026-05-22
Affected packages
• PyPI prefect: < 3.6.28.dev2 → fixed in 3.6.28.dev2
Description
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.
Related
Alias · CVE (1)
- CVE-2026-7724 A vulnerability has been found in PrefectHQ prefect up to 3.6.28.dev1. vulnerability
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-7724 advisory
- https://github.com/PrefectHQ/prefect/pull/21591 web
- https://github.com/PrefectHQ/prefect/commit/7c70ac54a5e101431d83b9f2681ec88d5e0021ed web
- https://gist.github.com/nedlir/fa99777e8989414585d08c3625bf044a web
- https://github.com/PrefectHQ/prefect package
- https://github.com/PrefectHQ/prefect/releases/tag/3.6.28.dev2 web
- https://linear.app/prefect/issue/OSS-7874/fix-dns-rebinding-toctou-bypass-in-validate-restricted-url web
- https://vuldb.com/submit/807303 web
- https://vuldb.com/vuln/360900 web
- https://vuldb.com/vuln/360900/cti web