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CVE-2026-5199 Cross Namespace Access via Batch Operation

🗓️ 01 Apr 2026 17:49:15Reported by TemporalType 
cvelist
 cvelist
🔗 www.cve.org👁 25 Views

Attacker writer in one namespace can control workflows in another due to cross-namespace bug.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-5199
1 Apr 202617:49
attackerkb
Anthropic
ANT-2026-DJBBBBPE · temporalio/temporal · Broken Access Control
29 Mar 202620:43
anthropic
Chainguard
CVE-2026-5199 vulnerabilities
5 Apr 202601:17
cgr
CNNVD
Temporal Server 安全漏洞
1 Apr 202600:00
cnnvd
CVE
CVE-2026-5199
1 Apr 202617:49
cve
EUVD
EUVD-2026-17995
1 Apr 202618:36
euvd
Github Security Blog
Temporal Server: attacker-controlled namespace could signal, delete, and reset workflows or activities in a victim namespace on the same cluster
1 Apr 202618:36
github
NVD
CVE-2026-5199
1 Apr 202618:16
nvd
OSV
CGA-RJGW-G66V-4RQ3
4 Apr 202621:15
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
[
  {
    "vendor": "Temporal Technologies, Inc.",
    "product": "temporal",
    "packageName": "temporal",
    "repo": "https://github.com/temporalio/temporal",
    "modules": [
      "Batch Operations"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "1.29.0",
        "lessThan": "1.29.5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "1.30.0",
        "lessThan": "1.30.3",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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