RUSTSEC-2026-0348 Brotli certificate decompression can allocate up to 1 GiB before authentication

The built-in Brotli certificate decompressor enabled by the non-default brotli crate feature bounded the size of the decompressed output, but accepted a peer-selected history window. Brotli's large-window extension was enabled, so a five-byte header could cause an allocation of 1 GiB. A peer can...

Integer overflow in the bundled Brotli C library

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. An updated version of brotli-sys has not...