CVE-2026-54569

Deferred Deferred - Pending Action

Unauthenticated Remote Code Execution in SENAITE.CORE

Publication date: 2026-08-26

Last updated on: 2026-09-09

Assigner: GitHub, Inc.

Description

SENAITE.CORE is the core framework for the SENAITE laboratory information management system. From 2.0.0 to 2.6.0, the SENAITE.CORE JSON API permits unauthenticated remote code execution through a two-request chain involving missing authorization and unsafe evaluation. The state-changing routes in src/bika/lims/jsonapi/update.py, including update, update_many, remove, doActionFor, doActionFor_many, and getusers, do not enforce the senaite.core: Access JSON API permission before resolving attacker-selected objects. In src/bika/lims/jsonapi/init.py, set_fields_from_request passes raw request values for RecordsField and RecordField instances to eval() before field mutator write-permission checks execute. An anonymous attacker can discover the bika_setup object identifier through @@uuid, send a value such as RejectionReasons to /@@API/update, and execute arbitrary Python in the Zope worker before a later mutation failure rolls back ZODB changes. The same unsafe evaluation pattern is present in src/senaite/core/browser/fields/record.py and src/senaite/core/browser/fields/records.py. Successful exploitation can expose or modify laboratory data, files, and accounts and can disrupt the service.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-26

Last Modified

2026-09-09

Generated

2026-09-16

AI Q&A

2026-08-26

EPSS Evaluated

2026-09-14

NVD

CVE-2026-54569

EUVD

EUVD-2026-66596

Affected Vendors & Products

Vendor	Product	Version / Range
senaite	senaite.core	From 2.0.0 (inc) to 2.6.0 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-95	The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is an unauthenticated remote code execution flaw in SENAITE.CORE, a laboratory information management system framework. It exists in versions 2.0.0 to 2.6.0 and allows attackers to execute arbitrary Python code on the server through a two-step process involving missing authorization checks and unsafe evaluation of user input.

Detection Guidance

To detect this vulnerability, check if your SENAITE.CORE instance is running a vulnerable version (2.0.0 to 2.6.0). Verify if the JSON API endpoints like /@@API/update are accessible without authentication. Inspect server logs for suspicious eval() calls or unauthorized access attempts to state-changing routes.

Impact Analysis

An attacker could exploit this to access, modify, or delete sensitive laboratory data, files, and user accounts. They could also disrupt system operations or gain full control over the affected server, potentially leading to data breaches or service outages.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of protected health information or personal data, violating GDPR and HIPAA requirements for data confidentiality, integrity, and access controls. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Update SENAITE.CORE to a version that replaces unsafe eval() with ast.literal_eval() in the affected files. Specifically, apply the patch from the commit a24d65e99a17ac43c5374ed9f0a60d0fe60d2f74 to src/senaite/core/browser/fields/record.py, src/senaite/core/browser/fields/records.py, and related parsing modules.

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