It could also be https://github.com/facebook/react/commit/7dc903cd29dac55efb4... ("This also fixes a critical security vulnerability.")
* the Recon VSCode extension (https://github.com/Recon-Fuzz/recon-extension)
* fuzz-utils (https://github.com/crytic/fuzz-utils)
* runes (https://github.com/Enigma-Dark/runes)
* fuzz_parser (https://github.com/Enigma-Dark/fuzz-trace-parser)
Some of them use the Echidna trace output, while others (like runes and fuzz-utils) take advantage of the fact that Echidna saves these sequences as part of the corpus during runtime (particularly, in the `reproducers` and `reproducers-unshrunk` corpus subdirectories)