{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21716","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","state":"PUBLISHED","assignerShortName":"hackerone","dateReserved":"2026-01-04T15:00:06.575Z","datePublished":"2026-03-30T19:07:28.538Z","dateUpdated":"2026-03-31T14:27:23.323Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"defaultStatus":"unaffected","vendor":"nodejs","product":"node","versions":[{"version":"20.20.1","status":"affected","lessThanOrEqual":"20.20.1","versionType":"semver"},{"version":"22.22.1","status":"affected","lessThanOrEqual":"22.22.1","versionType":"semver"},{"version":"24.14.0","status":"affected","lessThanOrEqual":"24.14.0","versionType":"semver"},{"version":"25.8.1","status":"affected","lessThanOrEqual":"25.8.1","versionType":"semver"}]}],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","baseScore":3.3,"baseSeverity":"LOW"}}],"providerMetadata":{"orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone","dateUpdated":"2026-03-30T19:07:28.538Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-862","lang":"en","description":"CWE-862 Missing Authorization"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T14:27:06.373734Z","id":"CVE-2026-21716","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-31T14:27:23.323Z"}}]}}