Address bug where aws v4 signatures get their service/region swapped in creds.#43
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Address bug where aws v4 signatures get their service/region swapped in creds.#43
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…in creds. There's a bug in the aws v4 processor. It reads the existing signature and then updates it with a new signature. It extracts the region and service fields from the old signature in the wrong order, so when it generates a new signature, they are swapped to service then region. Unfortunately we have active use cases that depend on this behavior. So this commit introduces an optional fix, with the default behavior being to preserve the field swapping bug behavior. - Add new flag to the processor "no_swap", defaulting to false. When not present or fault the existing swapping behavior is preserved. When it is true, the fields are not swapped.
mjbraun
approved these changes
Mar 11, 2026
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There's a bug in the aws v4 processor. It reads the existing signature and then updates it with a new signature. It extracts the region and service fields from the old signature in the wrong order, so when it generates a new signature, they are swapped to service then region. Unfortunately we have active use cases that depend on this behavior. So this commit introduces an optional fix, with the default behavior being to preserve the field swapping bug behavior.