protobuf is vulnerable to Denial Of Service (DoS). The vulnerability is due to multiple instances of non-repeated embedded message inputs with repeated or unknown fields which cause the objects to be converted back-n-forth between mutable and immutable forms, resulting in potentially long garbage collection pauses.
github.com/advisories/GHSA-4gg5-vx3j-xwc7
github.com/protocolbuffers/protobuf/commit/24b65038cfe36191268fda355aca0e43d3ecbcbe
github.com/protocolbuffers/protobuf/commit/42e47e5a3fa7219b136f6a5de7c74a89a79245c6
github.com/protocolbuffers/protobuf/commit/a3888f53317a8018e7a439bac4abeb8f3425d5e9
github.com/protocolbuffers/protobuf/commit/b0e8e607dc1ace17c823276d3384eeda775bbd76
github.com/protocolbuffers/protobuf/commit/db7c17803320525722f45c1d26fc08bc41d1bf48
github.com/protocolbuffers/protobuf/pull/10667
github.com/protocolbuffers/protobuf/pull/10668
github.com/protocolbuffers/protobuf/pull/10673
github.com/protocolbuffers/protobuf/pull/10674