CVE-2021-36088

CRITICAL

Fluent Bit <1.7.5 - Memory Corruption

Title source: llm

Fluent Bit (aka fluent-bit) 1.7.0 through 1.7.4 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).

Core 4

Core References

Exploit, Patch, Third Party Advisory

Patch, Third Party Advisory

Patch, Third Party Advisory

Third Party Advisory

CVSS v3 9.8

EPSS 0.0238

EPSS Percentile 81.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

CWE

CWE-415

Status published

Products (1)

treasuredata/fluent_bit 1.7.0 - 1.7.4

Published Jul 01, 2021

Tracked Since Feb 18, 2026