nextflow-io Nextflow up to 25.10.5/26.04.2 Auth Plugin AuthCommandImpl.groovy AuthCommandImpl.writeConfig permission assignment

Summaryinfo

A vulnerability, which was classified as problematic, was found in nextflow-io Nextflow up to 25.10.5/26.04.2. Affected is the function AuthCommandImpl.writeConfig of the file plugins/nf-tower/src/main/io/seqera/tower/plugin/auth/AuthCommandImpl.groovy of the component Auth Plugin. The manipulation results in permission assignment. This vulnerability was named CVE-2026-48722. The attack needs to be approached locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in nextflow-io Nextflow up to 25.10.5/26.04.2. Affected is the function AuthCommandImpl.writeConfig of the file plugins/nf-tower/src/main/io/seqera/tower/plugin/auth/AuthCommandImpl.groovy of the component Auth Plugin. The manipulation with an unknown input leads to a permission assignment vulnerability. CWE is classifying the issue as CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. This is going to have an impact on confidentiality. CVE summarizes:

Nextflow is a DSL for data-driven computational pipelines. From 25.09.2-edge until 25.10.6 and 26.04.3, nextflow auth login writes Seqera Platform OIDC bearer tokens to ${NXF_HOME:-~/.nextflow}/seqera-auth.config through AuthCommandImpl.writeConfig in plugins/nf-tower/src/main/io/seqera/tower/plugin/auth/AuthCommandImpl.groovy without setting restrictive file permissions, allowing the default umask 022 to create the file with mode 0644. On a multi-user POSIX host, a local user who can traverse the victim's home directory can read seqera-auth.config and impersonate the victim against Seqera Platform within the token's scope. Single-user systems and headless CI runners that do not use the interactive login flow are not affected. This issue is fixed in 25.10.6 and 26.04.3.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-48722 since 05/22/2026. The exploitability is told to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

Upgrading to version 25.10.6 or 26.04.3 eliminates this vulnerability.

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Productinfo

Vendor

• nextflow-io

Name

• Nextflow

Version

• 25.10.0
• 25.10.1
• 25.10.2
• 25.10.3
• 25.10.4
• 25.10.5
• 26.04.0
• 26.04.1
• 26.04.2

Website

• Product: https://github.com/nextflow-io/nextflow/

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