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Threat intelligence API
Get started
Live feed
Recipes
Free feeds
CLI & agents
The data
Incident records
Dark web
Validated IOCs
Vulnerabilities
Entity graph
For teams
For service providers
Use cases
About ThreatCluster
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OpenAPI (Swagger)
ReDoc
Examples on GitHub
Quickstart & plans
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HTTP2Shell
Vulnerability
Threat entity extracted from intelligence sources
Oct 21: 0 mentions
Oct 22: 0 mentions
Oct 23: 0 mentions
Oct 24: 0 mentions
Oct 25: 0 mentions
Oct 26: 1 mention
Oct 27: 1 mention
Oct 21
Oct 24
Oct 27
Entities
›
vulnerability
›
HTTP2Shell
Frequency
2
occurrences
First Seen
October 26, 2026
Last Seen
October 27, 2026
API
Overview
Recent Events
Profile
Profile
MITRE ATT&CK
1 / 2
Related CVEs
CVE-2026-111497
MITRE Techniques
T1105 - Ingress Tool Transfer
T1190 - Exploit Public-Facing Application
T1203 - Exploitation for Client Execution
T1499 - Endpoint Denial of Service
T1059 - Command and Scripting Interpreter
Affected Platforms
ASP.NET Core
Brotli
HTTP/2
HttpClient
.NET
Sectors Affected
Healthcare
-
REC
Recon
No techniques detected
-
RD
Resource Dev
No techniques detected
1
IA
Initial Access
T1190 - Exploit Public-Facing Application
2
EX
Execution
T1203 - Exploitation for Client Execution
T1059 - Command and Scripting Interpreter
-
PE
Persistence
No techniques detected
-
PE
Priv Esc
No techniques detected
-
DE
Defense Evasion
No techniques detected
-
CA
Cred Access
No techniques detected
-
DI
Discovery
No techniques detected
-
LM
Lateral Mov
No techniques detected
-
CO
Collection
No techniques detected
1
C2
C2
T1105 - Ingress Tool Transfer
-
EX
Exfil
No techniques detected
-
IM
Impact
No techniques detected
5
techniques detected across
3
tactics
Related Clusters (1)
Critical Brotli Vulnerability in .NET Requires Immediate Patching
2h ago
·
3 sources
78
Related Articles (2)
CVE-2026-111497 Broccoli2Shell: Microsoft Emergency .NET Brotli Patch Analysis
Aviatrix.Ai
·
8h ago
Microsoft releases emergency .NET patches for critical Brotli flaw
Bleepingcomputer
·
20h ago
Related Entities
Zero-day Exploit
CVE-2026-111497
CWE-787 - Out-of-bounds Write
Healthcare
T1105 - Ingress Tool Transfer
T1190 - Exploit Public-Facing Application
T1203 - Exploitation for Client Execution
T1499 - Endpoint Denial of Service
T1059 - Command and Scripting Interpreter
ASP.NET Core
Brotli
HTTP/2
