CVE-2020-35963

high

Description

flb_gzip_compress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.

References

https://github.com/fluent/fluent-bit/commit/cadff53c093210404aed01c4cf586adb8caa07af

https://fluentbit.io/announcements/v1.6.4/

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27261

Details

Source: Mitre, NVD

Published: 2021-01-03

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.8

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

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00376

Detections

Analytics