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CVE-2026-111497 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-045512.html	siemens-SADP	Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-443410.html	siemens-SADP	Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-898633.html	siemens-SADP	Third Party Advisory
https://ellio.tech/en/blog/node2shell-cve-2026-111497-rce-on-stock-nodejs-builds/	CISA-ADP	Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111497	CISA-ADP	US Government Resource
https://broccoli2shell.com	CVE	Third Party Advisory
https://github.com/advisories/GHSA-9v8h-qqgm-4m35	CVE	Third Party Advisory
https://github.com/dotnet/announcements/issues/494	CVE	Issue TrackingMitigationThird Party Advisory
https://github.com/google/brotli/releases/tag/v1.0.10	CVE	Release Notes
https://github.com/google/brotli/releases/tag/v1.1.1	CVE	Release Notes
https://github.com/google/brotli/releases/tag/v1.2.1	CVE	Release Notes
https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html	CVE	Mailing ListThird Party Advisory
https://patchtheplanet.org/brotli	CVE	Third Party Advisory
https://www.aikido.dev/blog/node2shell-nodejs-brotli-rce-cve-2026-111497	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/10/23/25	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/10/24/6	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/10/26/12	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/10/26/13	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/10/26/16	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2026/11/03/2	CVE	Mailing ListThird Party Advisory
https://github.com/andybalholm/brotli/releases/tag/v1.2.7	[email protected]	Release Notes
https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high	[email protected]	Third Party Advisory

see all 22 references

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name	Date Added	Due Date	Required Action
Google Brotli Unchecked Return Value Vulnerability	Oct 27, 2026	Nov 10, 2026	Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-252	Unchecked Return Value	[email protected]
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
google brotli	>= 1.0.3, < 1.0.10 >= 1.1.0, < 1.1.1 >= 1.2.0, < 1.2.1
CPE cpe:2.3:a:google:brotli::::::-::* Remediation No remediation found in references.
nodejs node.js	< 22.23.4 >= 23.0.0, < 24.22.1 >= 25.0.0, < 26.12.1
CPE cpe:2.3:a:nodejs:node.js:::::-:::* Remediation No remediation found in references.
python-hyper brotlicffi	< 1.2.1.0
CPE cpe:2.3:a:python-hyper:brotlicffi::::::python::* Remediation No remediation found in references.
microsoft .net	>= 8.0.0, < 8.0.33 >= 9.0.0, < 9.0.22 >= 10.0.0, < 10.0.14 11.0.0 preview1 11.0.0 preview2
CPE cpe:2.3:a:microsoft:.net:::::::: cpe:2.3:a:microsoft:.net:11.0.0:preview1:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview2:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview3:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview4:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview5:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview6:::::: cpe:2.3:a:microsoft:.net:11.0.0:preview7:::::: cpe:2.3:a:microsoft:.net:11.0.0:rc1:::::: cpe:2.3:a:microsoft:.net:11.0.0:rc2:::::: Remediation No remediation found in references.
debian debian linux	12.0
CPE cpe:2.3:o:debian:debian_linux:12.0:::::::* Remediation No remediation found in references.
istio istio	< 1.29.9 >= 1.30.0, < 1.30.6 >= 1.31.0, < 1.31.2
CPE cpe:2.3:a:istio:istio:::::::: Remediation No remediation found in references.
anthropic bun	< 1.4.4
CPE cpe:2.3:a:anthropic:bun:::::::: Remediation No remediation found in references.
envoyproxy envoy	< 1.37.8 >= 1.38.0, < 1.38.6 >= 1.39.0, < 1.39.3
CPE cpe:2.3:a:envoyproxy:envoy:::::::: Remediation No remediation found in references.
tianocore edk2	<= 202608
CPE cpe:2.3:a:tianocore:edk2:::::::: Remediation No remediation found in references.
google woff2	All versions
CPE cpe:2.3:a:google:woff2:-:::::::* Remediation No remediation found in references.
duckdb duckdb	<= 2.0.0
CPE cpe:2.3:a:duckdb:duckdb:::::::: Remediation No remediation found in references.
clickhouse clickhouse	<= 26.10.2.103
CPE cpe:2.3:a:clickhouse:clickhouse:::::::: Remediation No remediation found in references.
apache arrow	<= 26.0.0 27.0.0 dev
CPE cpe:2.3:a:apache:arrow:::::::: cpe:2.3:a:apache:arrow:27.0.0:dev:::::: Remediation No remediation found in references.
mcmilk 7-zip-zstd	<= 26.02-1.5.7-r2
CPE cpe:2.3:a:mcmilk:7-zip-zstd:::::::: Remediation No remediation found in references.
7-zip p7zip	<= 16.02
CPE cpe:2.3:a:7-zip:p7zip:::::::: Remediation No remediation found in references.
andybalholm brotli	< 1.2.7
CPE cpe:2.3:a:andybalholm:brotli::::::go::* Remediation No remediation found in references.
siemens ruggedcom ape1808 firmware	All versions
CPE cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:::::::* Remediation No remediation found in references.
siemens ruggedcom ape1808	All versions
CPE cpe:2.3:h:siemens:ruggedcom_ape1808:-:::::::* Remediation No remediation found in references.
siemens common configurator	All versions
CPE cpe:2.3:a:siemens:common_configurator:-:::::::* Remediation No remediation found in references.
siemens data flow monitoring	All versions
CPE cpe:2.3:a:siemens:data_flow_monitoring:-:::::::* Remediation No remediation found in references.
siemens edge opc ua server configurator	All versions
CPE cpe:2.3:a:siemens:edge_opc_ua_server_configurator:-:::::::* Remediation No remediation found in references.
siemens flow creator configurator	All versions
CPE cpe:2.3:a:siemens:flow_creator_configurator:-:::::::* Remediation No remediation found in references.
siemens industrial edge cloud connector configurator	All versions
CPE cpe:2.3:a:siemens:industrial_edge_cloud_connector_configurator:-:::::::* Remediation No remediation found in references.
siemens industrial edge databus configurator	All versions
CPE cpe:2.3:a:siemens:industrial_edge_databus_configurator:-:::::::* Remediation No remediation found in references.
siemens industrial edge hub	All versions
CPE cpe:2.3:a:siemens:industrial_edge_hub:-:::::::* Remediation No remediation found in references.
siemens industrial edge management cloud	All versions
CPE cpe:2.3:a:siemens:industrial_edge_management_cloud:-:::::::* Remediation No remediation found in references.

Change History

24 change records found show changes

Date	Action	Recorded By
Nov 6, 2026	CVE Modified	siemens-SADP
Nov 4, 2026	CVE Modified	siemens-SADP
Nov 4, 2026	Modified Analysis	[email protected]
Nov 3, 2026	CVE Modified	CVE
Oct 30, 2026	Modified Analysis	[email protected]
Oct 30, 2026	CVE Modified	siemens-SADP
Oct 30, 2026	CVE Modified	siemens-SADP
Oct 28, 2026	Initial Analysis	[email protected]
Oct 28, 2026	CVE Modified	CISA-ADP
Oct 27, 2026	CVE CISA KEV Update	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
Oct 27, 2026	CVE Modified	CISA-ADP
Oct 27, 2026	CVE Modified	[email protected]
Oct 26, 2026	CVE Modified	CVE
Oct 26, 2026	CVE Modified	CVE
Oct 26, 2026	CVE Modified	CVE
Oct 26, 2026	CVE Modified	CVE
Oct 24, 2026	CVE Modified	CVE
Oct 24, 2026	CVE Modified	CISA-ADP
Oct 23, 2026	CVE Modified	CVE
Oct 23, 2026	CVE Modified	CVE
Oct 23, 2026	CVE Modified	CISA-ADP
Oct 23, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	New CVE Received	[email protected]

CVE-2026-111497 Details

Description

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References to Advisories, Solutions, and Tools

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

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