OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14621
Crash type: Heap-buffer-overflow WRITE 1 Crash state: UA_unbase64 ByteString_decodeJson decodeFields
{ "severity": "HIGH" }
"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/open62541/OSV-2020-379.yaml"