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fix(agents): honor empty delegated scope requirements

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This commit is contained in:
Joshua Valluru 2026-09-26 12:45:07 -07:00
parent 2972ecc96e
commit 928df912c0
2 changed files with 21 additions and 2 deletions
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2
litellm/proxy/agent_endpoints/managed_identity.py
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@ -32,7 +32,7 @@ def classify_agent_subject(
if isinstance(scope, str) and scope:
if allowed_mode == "autonomous" or oid == binding.service_principal_id or claims.get("idtyp") == "app":
return AgentIdentityFailure(message="Delegated token contradicts the configured agent identity or mode")
if not binding.required_scopes or not frozenset(binding.required_scopes).issubset(scope.split()):
if not frozenset(binding.required_scopes).issubset(scope.split()):
return AgentIdentityFailure(message="Token lacks the required delegated scopes")
return AgentSubject(kind="delegated_subject", oid=oid, mode="delegated")
if allowed_mode == "delegated" or oid != binding.service_principal_id or claims.get("idtyp") == "user":

21
tests/test_litellm/proxy/agent_endpoints/test_managed_identity.py
View file

@ -3,7 +3,12 @@ from typing import Final
import pytest
from litellm.proxy.agent_endpoints.managed_identity import classify_agent_subject
from litellm.types.proxy.agent_identity import AgentIdentityBinding, AgentIdentityFailure, AgentSubject
from litellm.types.proxy.agent_identity import (
AgentExecutionMode,
AgentIdentityBinding,
AgentIdentityFailure,
AgentSubject,
)
TENANT: Final = "11111111-1111-4111-8111-111111111111"
CLIENT: Final = "22222222-2222-4222-8222-222222222222"
@ -107,3 +112,17 @@ def test_entra_binding_normalizes_identifiers_and_rejects_invalid_configuration(
assert config.issuer == f"https://login.microsoftonline.com/{config.tenant_id}/v2.0"
with pytest.raises(ValidationError):
EntraIdentityConfig(provider="microsoft_entra", tenant_id="invalid", client_id=identifier)
@pytest.mark.parametrize("mode", ["delegated", "both"])
def test_empty_required_scopes_allow_valid_delegated_scope(mode: AgentExecutionMode) -> None:
binding: Final = BINDING.model_copy(update={"required_scopes": ()})
result: Final = classify_agent_subject(binding, claims(oid=HUMAN, scp="custom_scope"), mode)
assert result == AgentSubject(kind="delegated_subject", oid=HUMAN, mode="delegated")
@pytest.mark.parametrize("scope", [None, "", 42])
def test_empty_requirements_do_not_make_a_scope_less_human_token_valid(scope: object) -> None:
binding: Final = BINDING.model_copy(update={"required_scopes": ()})
result: Final = classify_agent_subject(binding, claims(oid=HUMAN, scp=scope), "both")
assert isinstance(result, AgentIdentityFailure)