CVE-2026-73247
Kestra: SSRF via Pebble http() function allows unauthenticated access to internal services & cloud metadata
CVSS Score
8.6
EPSS Score
0.0%
EPSS Percentile
0th
Kestra is an open-source, event-driven orchestration platform. Prior to 2.0.0, Kestra's core/src/main/java/io/kestra/core/runners/pebble/functions/HttpFunction.java passes the user-controlled http() uri argument to URI.create() and the server-side HTTP client without restricting private, loopback, or link-local destinations, allowing an unauthenticated attacker to import and execute a flow that accesses internal services or cloud metadata.
| CWE | CWE-918 |
| Vendor | kestra-io |
| Product | kestra |
| Published | Aug 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
kestra-io / kestra
< 2.0.0