CVE-2020-8927 MEDIUM

CVE-2020-8927: Buffer overflow in Brotli library

Vendor Google Llc
Product Brotli
Weakness CWE-130
Published September 15, 2020
Last update May 29, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

Key dates

02Disclosure timeline

September 15, 2020 CVE published
May 29, 2026 Record updated