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fix(aws): stop ambient bearer credentials leaking under skip_auth #1887

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fix(aws): stop ambient bearer credentials leaking under skip_auth #1887

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20 changes: 20 additions & 0 deletions src/anthropic/lib/aws/_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,16 @@ def _api_key_auth(self) -> dict[str, str]:
return {}
return super()._api_key_auth

@property
@override
def _bearer_auth(self) -> dict[str, str]:
# skip_auth must also silence ambient bearer credentials: the parent
# constructor falls back to ANTHROPIC_AUTH_TOKEN from the environment,
# and a leaked Authorization header defeats the point of skip_auth.
if self._skip_auth:
return {}
return super()._bearer_auth

@override
def _validate_headers(self, headers: httpx.Headers, omitted: frozenset[str]) -> None:
if self._use_sigv4 or self._skip_auth:
Expand Down Expand Up @@ -344,6 +354,16 @@ def _api_key_auth(self) -> dict[str, str]:
return {}
return super()._api_key_auth

@property
@override
def _bearer_auth(self) -> dict[str, str]:
# skip_auth must also silence ambient bearer credentials: the parent
# constructor falls back to ANTHROPIC_AUTH_TOKEN from the environment,
# and a leaked Authorization header defeats the point of skip_auth.
if self._skip_auth:
return {}
return super()._bearer_auth

@override
def _validate_headers(self, headers: httpx.Headers, omitted: frozenset[str]) -> None:
if self._use_sigv4 or self._skip_auth:
Expand Down