{"id":"GHSA-92qf-fcph-v5wr","summary":"nextflow auth login command has incorrect default permissions","details":"### Impact\n\n`nextflow auth login` persists Seqera Platform OIDC tokens to `${NXF_HOME:-~/.nextflow}/seqera-auth.config`. The file is created via Java NIO without specifying file permissions, so under the default `umask 022` it lands at mode `0644` (world-readable).\n\nOn a multi-user POSIX host — typically an HPC login node, shared workstation, or jump host — any local user able to traverse the victim's home directory can read the file and obtain a valid Platform bearer token, enabling impersonation against Seqera Platform within the token's scope.\n\nSingle-user systems and headless CI runners, which do not invoke the interactive login flow, are not affected.\n\nAffected versions:  `25.09.2-edge` through `26.04.1`.\n  \n### Patches\n\nFixed in `\u003cPATCHED_VERSION\u003e`. The patched code applies mode `0600` to `seqera-auth.config` immediately after writing it, and re-applies on every subsequent login so any pre-existing world-readable copy left by an earlier version is tightened.\n\nTokens previously stored in the file must be treated as disclosed. After upgrading, run `nextflow auth logout`, revoke the token in the Seqera Platform UI, and run `nextflow auth login` again.\n\n### Workarounds\n  \nRestrict the file and its parent directory:\n\n`chmod 600 \"${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","aliases":["CVE-2026-48722"],"modified":"2026-06-25T22:11:29.527989Z","published":"2026-06-25T21:45:55Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-06-25T21:45:55Z","nvd_published_at":null,"cwe_ids":["CWE-276","CWE-732"],"severity":"MODERATE"},"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"}],"affected":[{"package":{"name":"io.nextflow:nextflow","ecosystem":"Maven","purl":"pkg:maven/io.nextflow/nextflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"25.09.2-edge"},{"fixed":"25.10.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-92qf-fcph-v5wr/GHSA-92qf-fcph-v5wr.json"}},{"package":{"name":"io.nextflow:nextflow","ecosystem":"Maven","purl":"pkg:maven/io.nextflow/nextflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"26.00.0-edge"},{"fixed":"26.04.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-92qf-fcph-v5wr/GHSA-92qf-fcph-v5wr.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}