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Vulnerability Details :

CVE-2026-53576

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-26 Jun, 2026 | 20:54
Updated At-29 Jun, 2026 | 15:19
Rejected At-
Credits

Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter("/api/v1/**")) treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresses its resources by URL path segments that the caller chooses (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). An anonymous caller picks the literal configs as the final segment, and the request bypasses Basic-Auth entirely. Because the bypass reaches the flow-create and execution-trigger routes, an unauthenticated caller creates a flow containing a Shell or Process task and runs it. The task executes as root inside the kestra container. The official docker-compose.yml mounts /var/run/docker.sock, so root in the container reaches the host Docker daemon. This vulnerability is fixed in 1.0.45 and 1.3.21.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:26 Jun, 2026 | 20:54
Updated At:29 Jun, 2026 | 15:19
Rejected At:
â–¼CVE Numbering Authority (CNA)
Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter("/api/v1/**")) treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresses its resources by URL path segments that the caller chooses (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). An anonymous caller picks the literal configs as the final segment, and the request bypasses Basic-Auth entirely. Because the bypass reaches the flow-create and execution-trigger routes, an unauthenticated caller creates a flow containing a Shell or Process task and runs it. The task executes as root inside the kestra container. The official docker-compose.yml mounts /var/run/docker.sock, so root in the container reaches the host Docker daemon. This vulnerability is fixed in 1.0.45 and 1.3.21.

Affected Products
Vendor
kestra-io
Product
kestra
Versions
Affected
  • < 1.0.45
  • >= 1.1.0, < 1.3.21
Problem Types
TypeCWE IDDescription
CWECWE-94CWE-94: Improper Control of Generation of Code ('Code Injection')
CWECWE-288CWE-288: Authentication Bypass Using an Alternate Path or Channel
Type: CWE
CWE ID: CWE-94
Description: CWE-94: Improper Control of Generation of Code ('Code Injection')
Type: CWE
CWE ID: CWE-288
Description: CWE-288: Authentication Bypass Using an Alternate Path or Channel
Metrics
VersionBase scoreBase severityVector
3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
x_refsource_CONFIRM
Hyperlink: https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
Resource:
x_refsource_CONFIRM
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
exploit
Hyperlink: https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
Resource:
exploit
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:26 Jun, 2026 | 22:16
Updated At:01 Jul, 2026 | 12:39

Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter("/api/v1/**")) treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresses its resources by URL path segments that the caller chooses (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). An anonymous caller picks the literal configs as the final segment, and the request bypasses Basic-Auth entirely. Because the bypass reaches the flow-create and execution-trigger routes, an unauthenticated caller creates a flow containing a Shell or Process task and runs it. The task executes as root inside the kestra container. The official docker-compose.yml mounts /var/run/docker.sock, so root in the container reaches the host Docker daemon. This vulnerability is fixed in 1.0.45 and 1.3.21.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

kestra
kestra
>>kestra>>Versions before 1.0.45(exclusive)
cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*
kestra
kestra
>>kestra>>Versions from 1.1.0(inclusive) to 1.3.21(exclusive)
cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-94Secondarysecurity-advisories@github.com
CWE-288Secondarysecurity-advisories@github.com
CWE ID: CWE-94
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-288
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4fsecurity-advisories@github.com
Exploit
Vendor Advisory
https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Vendor Advisory
Hyperlink: https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Hyperlink: https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Vendor Advisory

Change History

0
Information is not available yet

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