CVE-2026-48722

Token disclosure via world-readable authentication configuration

Published Sep 15, 2026 · Updated Sep 15, 2026

Incorrect file permissions in Seqera Nextflow allow local users to read a Seqera Platform OIDC bearer token from a configuration file. AuthCommandImpl.writeConfig creates ${NXF_HOME:-~/.nextflow}/seqera-auth.config through Java NIO without restrictive permissions, so umask 022 leaves mode 0644. Exposure requires interactive login on a multi-user POSIX host and home-directory traversal; the token permits victim impersonation only within its Seqera Platform scope.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect file permissions in Seqera Nextflow allow local users to read a Seqera Platform OIDC bearer token from a configuration file. AuthCommandImpl.writeConfig creates ${NXF_HOME:-~/.nextflow}/seqera-auth.config through Java NIO without restrictive permissions, so umask 022 leaves mode 0644. Exposure requires interactive login on a multi-user POSIX host and home-directory traversal; the token permits victim impersonation only within its Seqera Platform scope.

The record

CVE
CVE-2026-48722
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Seqera
Product
Nextflow
Classifications
CWE-732, CWE-276, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=>= 25.09.2-edge, < 25.10.6
  2. Affected versionversion=>= 25.11.0-edge, < 26.04.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Seqera · Nextflowversion=>= 25.09.2-edge, < 25.10.6; version=>= 25.11.0-edge, < 26.04.3

Published CVSS scores

5.5GitHubCVSS:3.1/AV:L/AC:L/PR:L/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CWE-276Incorrect Default Permissions
T1552.001Credentials In Files

Public exploit references

No public exploit references are available in this record.

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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