Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-10-27. Ransomware campaign use: Unknown.
CISA required action: 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.
CISA due date: 2026-11-10. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Google / Brotli
Default status: unaffected
- affected: 1.0.3 to < 1.0.10 (semver)
- affected: 1.1.0 to < 1.1.1 (semver)
- affected: 1.2.0 to < 1.2.1 (semver)
Fixes and workarounds
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.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- 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
- https://github.com/andybalholm/brotli/releases/tag/v1.2.7
- https://ellio.tech/en/blog/node2shell-cve-2026-111497-rce-on-stock-nodejs-builds/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111497
- https://github.com/advisories/GHSA-9v8h-qqgm-4m35
- http://www.openwall.com/lists/oss-security/2026/10/23/25
- https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html
- http://www.openwall.com/lists/oss-security/2026/10/24/6
- http://www.openwall.com/lists/oss-security/2026/10/26/12
- http://www.openwall.com/lists/oss-security/2026/10/26/13
- https://www.aikido.dev/blog/node2shell-nodejs-brotli-rce-cve-2026-111497
- https://broccoli2shell.com
- https://github.com/dotnet/announcements/issues/494
- https://github.com/google/brotli/releases/tag/v1.2.1
- https://github.com/google/brotli/releases/tag/v1.1.1
- https://github.com/google/brotli/releases/tag/v1.0.10
- https://patchtheplanet.org/brotli
- http://www.openwall.com/lists/oss-security/2026/10/26/16
- http://www.openwall.com/lists/oss-security/2026/11/03/2
- https://cert-portal.siemens.com/productcert/html/ssa-898633.html
- https://cert-portal.siemens.com/productcert/html/ssa-443410.html
- https://cert-portal.siemens.com/productcert/html/ssa-045512.html
- https://cert-portal.siemens.com/productcert/html/ssa-678870.html
- https://cert-portal.siemens.com/productcert/html/ssa-242944.html
Monitored source mentions
- CISA KEV — Google Brotli Unchecked Return Value Vulnerability ↗
- Wiz Research — Critical RCE Vulnerability in Apache HTTP Server: Everything You Need To Know | Wiz Blog ↗
- Apple Security — About the security content of iOS 27.2.1 and iPadOS 27.2.1 - Apple Support ↗
- GitHub Advisory Database — Microsoft Security Advisory CVE-2026-111497 - .NET Brotli Decoder Out-of-bounds Write Vulnerability ↗
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.82641,
"percentile": 0.99672
}11 Nov 2026, 18:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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Stored EPSS snapshot at this observation.
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Stored KEV snapshot at this observation.
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