Same as for any physical product. If you are selling to a general consumer via a one-sided contract then there are implicit guarantees of fitness for the plain

Same as for any physical product. If you are selling to a general consumer via a one-sided contract then there are implicit guarantees of fitness for the plainly advertised purpose that can almost never be waived at least in the US. Note that this does not usually apply to gifts so non-commercial OSS is likely unaffected. If you are selling to a business customer then they are accepting those terms. If they wish to then go on and use that product in their delivery to a general consumer then they are accepting the liability of verifying or making it fit for their purpose. If they wish to provide other guarantees then they are also responsible for those.