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CVE-2020-8927

Buffer overflow in Brotli library

Medium5.3EPSS 3.2%
Published
Updated
Reserved
Assigned by
Google

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.

Scores

CVSS scores of CVE-2020-8927, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVDNVD · Modified3.1Medium6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS (exploitation in 30 days)
3.2% · top 12% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (14)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .