CVE-2020-36846

CRITICAL EPSS 41.2%
Published May 30, 20251y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 30, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

A buffer overflow, as described in CVE-2020-8927, exists in the embedded Brotli library.  Versions of IO::Compress::Brotli prior to 0.007 included a version of the brotli library prior to version 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 IO::Compress::Brotli module to 0.007 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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
41.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

References 5

  • github.com https://github.com/advisories/GHSA-5v8v-66v8-mwm7
  • github.com https://github.com/google/brotli/commit/223d80cfbec8fd346e32906c732c8ede21f0cea6
  • github.com https://github.com/google/brotli/pull/826
  • github.com https://github.com/timlegge/perl-IO-Compress-Brotli/blob/8b44c83b23bb4658179e1494af4b725a1bc476bc/Changes#L52
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2020-8927

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.