VULNERABILITY INTELLIGENCE

CVE-2020-8927

CVSS score5.3 MEDIUM
EPSS probability3.22%
CISA KEVNot currently listed
Published2020-09-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

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.

Weakness classification

  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-130: Improper Handling of Length Parameter Inconsistency

Primary references