Lucene search
+L
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Settings
Sign in

Temporal Server: attacker-controlled namespace could signal, delete, and reset workflows or activities in a victim namespace on the same cluster

🗓️ 01 Apr 2026 18:36:38Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 22 Views

Attacker-controlled namespace can signal, delete, and reset workflows in a victim namespace on the same cluster.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB		CVE-2026-5199
1 Apr 202617:49
–attackerkb
anthropic
Anthropic		ANT-2026-DJBBBBPE · temporalio/temporal · Broken Access Control
29 Mar 202620:43
–anthropic
cgr
Chainguard		CVE-2026-5199 vulnerabilities
5 Apr 202601:17
–cgr
cnnvd
CNNVD		Temporal Server 安全漏洞
1 Apr 202600:00
–cnnvd
cve
CVE		CVE-2026-5199
1 Apr 202617:49
–cve
cvelist
Cvelist		CVE-2026-5199 Cross Namespace Access via Batch Operation
1 Apr 202617:49
–cvelist
euvd
EUVD		EUVD-2026-17995
1 Apr 202618:36
–euvd
nvd
NVD		CVE-2026-5199
1 Apr 202618:16
–nvd
osv
OSV		CGA-RJGW-G66V-4RQ3
4 Apr 202621:15
–osv
osv
OSV		CLEANSTART-2026-SP73148 Security fixes for CVE-2025-61726, CVE-2025-61728, CVE-2025-61730, CVE-2025-68121, CVE-2026-24051, CVE-2026-25679, CVE-2026-25680, CVE-2026-25681, CVE-2026-26958, CVE-2026-27136, CVE-2026-27139, CVE-2026-27142, CVE-2026-27145, CVE-2026-32280, CVE-2026-32281, CVE-2026-32282, CVE-2026-32283, CVE-2026-32288, CVE-2026-32289, CVE-2026-33186, CVE-2026-33811, CVE-2026-33814, CVE-2026-33815, CVE-2026-33816, CVE-2026-34986, CVE-2026-39820, CVE-2026-39821, CVE-2026-39822, CVE-2026-39823, CVE-2026-39824, CVE-2026-39825, CVE-2026-39826, CVE-2026-39827, CVE-2026-39828, CVE-2026-39829, CVE-2026-39830, CVE-2026-39831, CVE-2026-39832, CVE-2026-39833, CVE-2026-39834, CVE-2026-39835, CVE-2026-39836, CVE-2026-39883, CVE-2026-40890, CVE-2026-41602, CVE-2026-41889, CVE-2026-42499, CVE-2026-42502, CVE-2026-42504, CVE-2026-42505, CVE-2026-42506, CVE-2026-42507, CVE-2026-42508, CVE-2026-46595, CVE-2026-46597, CVE-2026-46598, CVE-2026-5199, CVE-2026-5724 applied in versions: 1.5.1-r0
21 Jul 202606:56
–osv
Rows per page
Vulners
Node
OR
go.temporal.ioserverRange<1.29.5go
go.temporal.ioserverRange1.30.0-143.0–1.30.3go

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
21 Jul 2026 14:59Current
6.1Medium risk
Vulners AI Score6.1
CVSS 42.3
EPSS0.00248
SSVC
CWE-639
temporal server bugcross namespace authorizationworkflow signalingworkflow deletionreset workflowsattacker controlled namespace
22