{"id":"AZL-81236","summary":"CVE-2026-21716 affecting package nodejs for versions less than 20.14.0-15","details":"An incomplete fix for CVE-2024-36137 leaves `FileHandle.chmod()` and `FileHandle.chown()` in the promises API without the required permission checks, while their callback-based equivalents (`fs.fchmod()`, `fs.fchown()`) were correctly patched.\r\n\r\nAs a result, code running under `--permission` with restricted `--allow-fs-write` can still use promise-based `FileHandle` methods to modify file permissions and ownership on already-open file descriptors, bypassing the intended write restrictions.\r\n\r\nThis vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted.","modified":"2026-08-28T17:47:43.148021153Z","published":"2026-03-30T20:16:19Z","upstream":["CVE-2026-21716"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21716"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/nodejs"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.14.0-15"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81236.json"}}],"schema_version":"1.9.0"}