Detections
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CVE-2021-36088

critical

Description

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).

References

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2021-702.yaml

https://github.com/fluent/fluent-bit/pull/3453

https://github.com/fluent/fluent-bit/commit/22346a74c07ceb90296be872be2d53eb92252a54

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33750

Details

Source: Mitre, NVD

Published: 2021-07-01

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00364