CVE-2026-49869Public exploitNetwork attack vectorHinoki check available

Unauthenticated command execution via suffix-match authentication bypass

Published Jun 26, 2026 · Updated Jun 26, 2026

Authentication bypass in Kestra before 1.0.45 and 1.1.0 through 1.3.20 allows remote attackers to execute arbitrary commands. AuthenticationFilter treats every request path ending in /configs as public instead of matching only the intended configuration endpoints. With default OSS Basic Auth and bundled script plugins, network access is sufficient to create and run a workflow as root inside the worker container.

CVSS severity10.0
Critical
EPSS probability1.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authentication bypass in Kestra before 1.0.45 and 1.1.0 through 1.3.20 allows remote attackers to execute arbitrary commands. AuthenticationFilter treats every request path ending in /configs as public instead of matching only the intended configuration endpoints. With default OSS Basic Auth and bundled script plugins, network access is sufficient to create and run a workflow as root inside the worker container.

The record

CVE
CVE-2026-49869
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Kestra
Product
Kestra
Classifications
CWE-287, CWE-184, CWE-78, CWE-918, T1190, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.0.45
  2. Affected versionversion=>= 1.1.0, < 1.3.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kestra · Kestraversion=< 1.0.45; version=>= 1.1.0, < 1.3.21

Published CVSS scores

10.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-184Incomplete List of Disallowed Inputs
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo