> When corporations sponsor the maintenance of the FOSS projects they use, they are effectively buying an insurance policy that guarantees a prompt, well-coordinated response to security problems. Unless there's a contract explicitly stating so, this is not true whatsoever. If you want an "insurance policy" of this kind, hire the maintainer or pay for an actual support contract from them. Donations are exactly that,…
They are under moral obligation in the sense that they need to make the donators happy to keep getting donations.
You can’t sue a maintainer for not fixing a security issue if it’s not part of a contract, and the license is explicit about being As Is No Warranty.
If you don’t like it, fix it yourself in a fork.