CVE-2021-27186

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

Fluent Bit 1.6.10 has a NULL pointer dereference when an flb_malloc return value is not validated by flb_avro.c or http_server/api/v1/metrics.c.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/fluent/fluent-bit/issues/3044Exploit, Third Party Advisory
https://github.com/fluent/fluent-bit/pull/3045Exploit, Patch, Third Party Advisory
https://github.com/fluent/fluent-bit/pull/3047Patch, Third Party Advisory
https://github.com/fluent/fluent-bit/issues/3044Exploit, Third Party Advisory
https://github.com/fluent/fluent-bit/pull/3045Exploit, Patch, Third Party Advisory
https://github.com/fluent/fluent-bit/pull/3047Patch, Third Party Advisory

Timeline

Published: Feb 10, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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