PYSEC-2026-4222 Hydra: Mutable instantiate policy sets allow target blocklist bypass

Summary Hydra's legacy instantiate target blocklists and related execution-policy collections are stored in mutable module-level state. Because locate can resolve attributes on imported objects, a configuration can resolve a mutation method such as .discard, modify the active policy, and then...

EUVD-2026-93658

Hydra: Mutable instantiate policy sets allow target blocklist bypass...

GHSA-MWJ6-RFH8-7QF4 Hydra: Mutable instantiate policy sets allow target blocklist bypass

Summary Hydra's legacy instantiate target blocklists and related execution-policy collections are stored in mutable module-level state. Because locate can resolve attributes on imported objects, a configuration can resolve a mutation method such as .discard, modify the active policy, and then...

Hydra: Mutable instantiate policy sets allow target blocklist bypass

Summary Hydra's legacy instantiate target blocklists and related execution-policy collections are stored in mutable module-level state. Because locate can resolve attributes on imported objects, a configuration can resolve a mutation method such as .discard, modify the active policy, and then...

CVE-2026-106439

A flaw was found in hydra-core. Target execution policies used during object instantiation are stored in mutable module-level state. An attacker who supplies crafted configuration entries can manipulate this policy to remove restrictions on blocked targets. Successful exploitation allows the...

CVE-2026-106439

Hydra is a framework for elegantly configuring complex applications. From 1.3.4 until 1.3.7 and 1.4.0.dev10, Hydra stores legacy instantiate target blocklists and related execution-policy collections in mutable module-level state. An attacker who controls multiple sibling target entries can resol...

CVE-2026-106439 Hydra: Mutable instantiate policy sets allow target blocklist bypass

Hydra is a framework for elegantly configuring complex applications. From 1.3.4 until 1.3.7 and 1.4.0.dev10, Hydra stores legacy instantiate target blocklists and related execution-policy collections in mutable module-level state. An attacker who controls multiple sibling target entries can resol...

CVE-2026-106439: Use of Externally-Controlled Input to Select Classes or Code

Hydra is a framework for elegantly configuring complex applications. From 1.3.4 until 1.3.7 and 1.4.0.dev10, Hydra stores legacy instantiate target blocklists and related execution-policy collections in mutable module-level state. An attacker who controls multiple sibling target entries can resol...

PT-2026-107100

Name of the Vulnerable Software and Affected Versions Hydra versions 1.3.4 through 1.3.6 Hydra versions 1.4.0.dev1 through 1.4.0.dev9 Description Hydra stores legacy instantiate target blocklists and related execution-policy collections in mutable module-level state. An attacker controlling...