# brotli (PyPI) vulnerabilities

Source: https://junglewise.ai/threats/technologies/pypi-brotli  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/pypi-brotli.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in brotli (PyPI): 0 in the last 7 days and 1 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-111497, was published on 22 October 2026. 1 vulnerability in the last four weeks, up from none in the four before. 1 critical against 0, 1 exploited in the wild against 0.

## Counts

- Last 7 days: 0
- Last 30 days: 1
- Last 90 days: 1
- All time: 3 (1 critical, 1 exploited in the wild)

## About brotli (PyPI)

Compression library implementing the Brotli algorithm for data compression.

## Latest brotli (PyPI) vulnerabilities

- [CVE-2026-111497: Google Brotli buffer overflow in decoder](https://junglewise.ai/threats/cve-2026-111497-a-buffer-overflow-vulnerability-in-the-brotli-decoder-c-dec) (critical, exploited in the wild, CVSS 4, published 22 Oct 2026)
- [CVE-2025-6176: PYSEC-2026-2401 - Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression…](https://junglewise.ai/threats/cve-2025-6176-scrapy-denial-of-service-via-brotli-decompression-bomb) (low, CVSS 3, published 13 Jul 2026)
- [CVE-2020-36846: RUSTSEC-2021-0131 - Integer overflow in the bundled Brotli C library](https://junglewise.ai/threats/cve-2020-36846-integer-overflow-in-the-bundled-brotli-c-library) (low, CVSS 3.1, published 20 Dec 2021)

## Most severe brotli (PyPI) vulnerabilities

- [CVE-2026-111497: Google Brotli buffer overflow in decoder](https://junglewise.ai/threats/cve-2026-111497-a-buffer-overflow-vulnerability-in-the-brotli-decoder-c-dec) (critical, exploited in the wild, CVSS 4, published 22 Oct 2026)
- [CVE-2020-36846: RUSTSEC-2021-0131 - Integer overflow in the bundled Brotli C library](https://junglewise.ai/threats/cve-2020-36846-integer-overflow-in-the-bundled-brotli-c-library) (low, CVSS 3.1, published 20 Dec 2021)
- [CVE-2025-6176: PYSEC-2026-2401 - Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression…](https://junglewise.ai/threats/cve-2025-6176-scrapy-denial-of-service-via-brotli-decompression-bomb) (low, CVSS 3, published 13 Jul 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before. 1 critical against 0, 1 exploited in the wild against 0.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 1 | 1 | 1 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other PyPI technologies

- [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities
- [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities
- [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities
- [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities
- [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities
- [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities
- [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities
- [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities
- [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities
- [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities
- [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities
- [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "brotli (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/pypi-brotli, 13 November 2026.