CVE-2026-73246Public exploitNetwork attack vectorHinoki check available

Unauthenticated credential disclosure via live task serialization

Published Aug 11, 2026 · Updated Aug 11, 2026

Information disclosure in Kestra 1.3.26 allows remote attackers to read live task configuration through the worker endpoint. WorkerEndpoint marks GET /worker non-sensitive and directly serializes complete live Task objects, including environment variables, headers, commands, connection details, and plaintext credentials. Exploitation requires network access to management port 8081, at least one running task, and no separately configured management-endpoint authentication.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information disclosure in Kestra 1.3.26 allows remote attackers to read live task configuration through the worker endpoint. WorkerEndpoint marks GET /worker non-sensitive and directly serializes complete live Task objects, including environment variables, headers, commands, connection details, and plaintext credentials. Exploitation requires network access to management port 8081, at least one running task, and no separately configured management-endpoint authentication.

The record

CVE
CVE-2026-73246
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Kestra
Product
Kestra
Classifications
CWE-306, CWE-200, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 1.3.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kestra · Kestraversion=< 1.3.31

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

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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-306Missing Authentication for Critical Function
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

Public exploit references

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

Technologies

Your stack

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Your stack

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