A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 26 products from google, from nodejs, from python-hyper and 23 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-10-22T14:17:37.190
2026-10-30T20:30:11.670
Analyzed
CVSSv3.1: 9.8 (CRITICAL)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | brotli | < 1.0.10 | Yes | |
| Application | brotli | < 1.1.1 | Yes | |
| Application | brotli | < 1.2.1 | Yes | |
| Application | nodejs | node.js | < 22.23.4 | Yes |
| Application | nodejs | node.js | < 24.22.1 | Yes |
| Application | nodejs | node.js | < 26.12.1 | Yes |
| Application | python-hyper | brotlicffi | < 1.2.1.0 | Yes |
| Application | microsoft | .net | < 8.0.33 | Yes |
| Application | microsoft | .net | < 9.0.22 | Yes |
| Application | microsoft | .net | < 10.0.14 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Application | microsoft | .net | 11.0.0 | Yes |
| Operating System | debian | debian_linux | 12.0 | Yes |
| Application | istio | istio | < 1.29.9 | Yes |
| Application | istio | istio | < 1.30.6 | Yes |
| Application | istio | istio | < 1.31.2 | Yes |
| Application | anthropic | bun | < 1.4.4 | Yes |
| Application | envoyproxy | envoy | < 1.37.8 | Yes |
| Application | envoyproxy | envoy | < 1.38.6 | Yes |
| Application | envoyproxy | envoy | < 1.39.3 | Yes |
| Application | tianocore | edk2 | ≤ 202608 | Yes |
| Application | woff2 | - | Yes | |
| Application | duckdb | duckdb | ≤ 2.0.0 | Yes |
| Application | clickhouse | clickhouse | ≤ 26.10.2.103 | Yes |
| Application | apache | arrow | ≤ 26.0.0 | Yes |
| Application | apache | arrow | 27.0.0 | Yes |
| Application | mcmilk | 7-zip-zstd | ≤ 26.02-1.5.7-r2 | Yes |
| Application | 7-zip | p7zip | ≤ 16.02 | Yes |
| Application | andybalholm | brotli | < 1.2.7 | Yes |
| Operating System | siemens | ruggedcom_ape1808_firmware | - | Yes |
| Hardware | siemens | ruggedcom_ape1808 | - | No |
| Application | siemens | common_configurator | - | Yes |
| Application | siemens | data_flow_monitoring | - | Yes |
| Application | siemens | edge_opc_ua_server_configurator | - | Yes |
| Application | siemens | flow_creator_configurator | - | Yes |
| Application | siemens | industrial_edge_cloud_connector_configurator | - | Yes |
| Application | siemens | industrial_edge_databus_configurator | - | Yes |
| Application | siemens | industrial_edge_hub | - | Yes |
| Application | siemens | industrial_edge_management_cloud | - | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For google's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.