CVE-2020-36846
IO::Compress::Brotli versions prior to 0.007 for Perl have an integer overflow in the bundled Brotli C library
CRITICAL 9.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.66 % · percentile 51 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- CPANSec
- NVD status
- Deferred
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.
Weaknesses (CWE)
References
- https://github.com/google/brotli/pull/826
- https://github.com/advisories/GHSA-5v8v-66v8-mwm7
- https://github.com/timlegge/perl-IO-Compress-Brotli/blob/8b44c83b23bb4658179e1494af4b725a1bc476bc/Changes#L52
- https://nvd.nist.gov/vuln/detail/CVE-2020-8927
- https://github.com/google/brotli/commit/223d80cfbec8fd346e32906c732c8ede21f0cea6
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Advisories
- GHSA-5v8v-66v8-mwm7 — Integer overflow in the bundled Brotli C library
- GO-2025-3726 — IO::Compress::Brotli versions prior to 0.007 for Perl have an integer overflow in the bundled Brotli C library in github.com/google/brotli
- PYSEC-2020-29 — 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
European references
- ENISA EUVD · EUVD-2025-16444
- GCVE · GCVE-0-2020-36846
Affected products
| Product | Versions |
|---|---|
| TIMLEGGE · IO::Compress::Brotli | affected 0 < 0.007 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |