cvedb.io
CVE-2021-46878
HIGH · CVSS 7.8
EPSS exploitation probability: 0%
Published 2023-04-11T18:15:58.340 · Last modified 2026-06-17T04:15:43.120

Summary

An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

Affected products

treasuredata — fluent_bit

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.