Vulnerability-Lookup

CVE-2026-48722 (GCVE-0-2026-48722)

Vulnerability from cvelistv5 – Published: 2026-09-15 14:07 – Updated: 2026-09-15 14:07

Title

Nextflow: Incorrect default permissions in the nextflow auth login command

Summary

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.

Severity

5.5 (Medium)


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

CWE

CWE-276 - Incorrect Default Permissions
CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/nextflow-io/nextflow/security/…	x_refsource_CONFIRM
https://github.com/nextflow-io/nextflow/pull/7182	x_refsource_MISC
https://github.com/nextflow-io/nextflow/commit/41…	x_refsource_MISC
https://github.com/nextflow-io/nextflow/commit/a2…	x_refsource_MISC
https://github.com/nextflow-io/nextflow/releases/…	x_refsource_MISC
https://github.com/nextflow-io/nextflow/releases/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
nextflow-io	nextflow	Affected: >= 25.09.2-edge, < 25.10.6 Affected: >= 25.11.0-edge, < 26.04.3	guessed

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "nextflow",
          "vendor": "nextflow-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 25.09.2-edge, \u003c 25.10.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 25.11.0-edge, \u003c 26.04.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s home directory can read seqera-auth.config and impersonate the victim against Seqera Platform within the token\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-276",
              "description": "CWE-276: Incorrect Default Permissions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
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          "descriptions": [
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              "description": "CWE-732: Incorrect Permission Assignment for Critical Resource",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T14:07:45.568Z",
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        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nextflow-io/nextflow/security/advisories/GHSA-92qf-fcph-v5wr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nextflow-io/nextflow/security/advisories/GHSA-92qf-fcph-v5wr"
        },
        {
          "name": "https://github.com/nextflow-io/nextflow/pull/7182",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextflow-io/nextflow/pull/7182"
        },
        {
          "name": "https://github.com/nextflow-io/nextflow/commit/41a5f24afec8a6e9769a24cae5e08b5462fbfdc1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextflow-io/nextflow/commit/41a5f24afec8a6e9769a24cae5e08b5462fbfdc1"
        },
        {
          "name": "https://github.com/nextflow-io/nextflow/commit/a2813c610a3e7f13d7a0a0b1b543b7ad47586eaa",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextflow-io/nextflow/commit/a2813c610a3e7f13d7a0a0b1b543b7ad47586eaa"
        },
        {
          "name": "https://github.com/nextflow-io/nextflow/releases/tag/v25.10.6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextflow-io/nextflow/releases/tag/v25.10.6"
        },
        {
          "name": "https://github.com/nextflow-io/nextflow/releases/tag/v26.04.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextflow-io/nextflow/releases/tag/v26.04.3"
        }
      ],
      "source": {
        "advisory": "GHSA-92qf-fcph-v5wr",
        "discovery": "UNKNOWN"
      },
      "title": "Nextflow: Incorrect default permissions in the nextflow auth login command"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-48722",
    "datePublished": "2026-09-15T14:07:45.568Z",
    "dateReserved": "2026-05-22T18:47:27.756Z",
    "dateUpdated": "2026-09-15T14:07:45.568Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-48722\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-15T15:17:16.020\",\"lastModified\":\"2026-09-15T15:17:16.020\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\u0027s home directory can read seqera-auth.config and impersonate the victim against Seqera Platform within the token\u0027s 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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"nextflow-io\",\"product\":\"nextflow\",\"versions\":[{\"version\":\"\u003e= 25.09.2-edge, \u003c 25.10.6\",\"status\":\"affected\"},{\"version\":\"\u003e= 25.11.0-edge, \u003c 26.04.3\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-276\"},{\"lang\":\"en\",\"value\":\"CWE-732\"}]}],\"references\":[{\"url\":\"https://github.com/nextflow-io/nextflow/commit/41a5f24afec8a6e9769a24cae5e08b5462fbfdc1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextflow-io/nextflow/commit/a2813c610a3e7f13d7a0a0b1b543b7ad47586eaa\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextflow-io/nextflow/pull/7182\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextflow-io/nextflow/releases/tag/v25.10.6\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextflow-io/nextflow/releases/tag/v26.04.3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextflow-io/nextflow/security/advisories/GHSA-92qf-fcph-v5wr\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

GHSA-92QF-FCPH-V5WR

Vulnerability from github – Published: 2026-06-25 21:45 – Updated: 2026-06-25 21:45

Summary

nextflow auth login command has incorrect default permissions

Details

Impact

nextflow auth login persists Seqera Platform OIDC tokens to ${NXF_HOME:-~/.nextflow}/seqera-auth.config. The file is created via Java NIO without specifying file permissions, so under the default umask 022 it lands at mode 0644 (world-readable).

On a multi-user POSIX host — typically an HPC login node, shared workstation, or jump host — any local user able to traverse the victim's home directory can read the file and obtain a valid Platform bearer token, enabling impersonation against Seqera Platform within the token's scope.

Single-user systems and headless CI runners, which do not invoke the interactive login flow, are not affected.

Affected versions: 25.09.2-edge through 26.04.1.

Patches

Fixed in <PATCHED_VERSION>. The patched code applies mode 0600 to seqera-auth.config immediately after writing it, and re-applies on every subsequent login so any pre-existing world-readable copy left by an earlier version is tightened.

Tokens previously stored in the file must be treated as disclosed. After upgrading, run nextflow auth logout, revoke the token in the Seqera Platform UI, and run nextflow auth login again.

Workarounds

Restrict the file and its parent directory:

chmod 600 "${NXF_HOME:-$HOME/.nextflow}/seqera-auth.config" chmod 700 "${NXF_HOME:-$HOME/.nextflow}"

Alternatively, supply the Platform token via the TOWER_ACCESS_TOKEN environment variable instead of running nextflow auth login.

References

https://cwe.mitre.org/data/definitions/276.html

Severity

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.nextflow:nextflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "25.09.2-edge"
            },
            {
              "fixed": "25.10.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.nextflow:nextflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "26.00.0-edge"
            },
            {
              "fixed": "26.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48722"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276",
      "CWE-732"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-25T21:45:55Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\n`nextflow auth login` persists Seqera Platform OIDC tokens to `${NXF_HOME:-~/.nextflow}/seqera-auth.config`. The file is created via Java NIO without specifying file permissions, so under the default `umask 022` it lands at mode `0644` (world-readable).\n\nOn a multi-user POSIX host \u2014 typically an HPC login node, shared workstation, or jump host \u2014 any local user able to traverse the victim\u0027s home directory can read the file and obtain a valid Platform bearer token, enabling impersonation against Seqera Platform within the token\u0027s scope.\n\nSingle-user systems and headless CI runners, which do not invoke the interactive login flow, are not affected.\n\nAffected versions:  `25.09.2-edge` through `26.04.1`.\n  \n### Patches\n\nFixed in `\u003cPATCHED_VERSION\u003e`. The patched code applies mode `0600` to `seqera-auth.config` immediately after writing it, and re-applies on every subsequent login so any pre-existing world-readable copy left by an earlier version is tightened.\n\nTokens previously stored in the file must be treated as disclosed. After upgrading, run `nextflow auth logout`, revoke the token in the Seqera Platform UI, and run `nextflow auth login` again.\n\n### Workarounds\n  \nRestrict the file and its parent directory:\n\n`chmod 600 \"${NXF_HOME:-$HOME/.nextflow}/seqera-auth.config\"`\n`chmod 700 \"${NXF_HOME:-$HOME/.nextflow}\"`\n\nAlternatively, supply the Platform token via the `TOWER_ACCESS_TOKEN` environment variable instead of running `nextflow auth login`.\n\n### References\n  \n  - https://cwe.mitre.org/data/definitions/276.html",
  "id": "GHSA-92qf-fcph-v5wr",
  "modified": "2026-06-25T21:45:55Z",
  "published": "2026-06-25T21:45:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nextflow-io/nextflow/security/advisories/GHSA-92qf-fcph-v5wr"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nextflow-io/nextflow"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nextflow auth login command has incorrect default permissions"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-48722 (GCVE-0-2026-48722)

GHSA-92QF-FCPH-V5WR

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature