CVE-2026-21716 | Node.js up to 20.20.1/22.22.1/24.14.0/25.8.1 Promises API FileHandle.chmod/FileHandle.chown file descriptor consumption (Nessus ID 304242)

VDB-354281 · CVE-2026-21716 · NESSUS 304242 NODE.JS UP TO 20.20.1/22.22.1/24.14.0/25.8.1 PROMISES API FILEHANDLE.CHMOD/FILEHANDLE.CHOWN FILE DESCRIPTOR CONSUMPTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.2 $0-$5k 2.68+ Summaryinfo A vulnerability marked as problematic has been reported in Node.js up to 20.20.1/22.22.1/24.14.0/25.8.1. This issue affects the function FileHandle.chmod/FileHandle.chown of the component Promises API. The manipulation leads to file descriptor consumption. This vulnerability is documented as CVE-2026-21716. The attack needs to be performed locally. There is not any exploit available. It is suggested to install a patch to address this issue. Detailsinfo A vulnerability was found in Node.js up to 20.20.1/22.22.1/24.14.0/25.8.1 and classified as problematic. This issue affects the function FileHandle.chmod/FileHandle.chown of the component Promises API. The manipulation with an unknown input leads to a file descriptor consumption vulnerability. Using CWE to declare the problem leads to CWE-769. This entry has been deprecated because it was a duplicate of CWE-774. All content has been transferred to CWE-774. Impacted is integrity. The summary by CVE is: 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. As 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. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted. The advisory is shared at nodejs.org. The identification of this vulnerability is CVE-2026-21716 since 01/04/2026. The exploitation is known to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. The vulnerability scanner Nessus provides a plugin with the ID 304242 (Debian dsa-6183 : libnode-dev - security update), which helps to determine the existence of the flaw in a target environment. Applying a patch is able to eliminate this problem. The vulnerability is also documented in the vulnerability database at Tenable (304242). Productinfo Type JavaScript Library Name Node.js Version 20.20.0 20.20.1 22.22.0 22.22.1 24.0 24.1 24.2 24.3 24.4 24.5 24.6 24.7 24.8 24.9 24.10 24.11 24.12 24.13 24.14.0 25.8.0 25.8.1 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.3 VulDB Meta Temp Score: 3.2 VulDB Base Score: 3.3 VulDB Temp Score: 3.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 3.3 CNA Vector (hackerone): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: File descriptor consumption CWE: CWE-769 / CWE-400 / CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Nessus ID: 304242 Nessus Name: Debian dsa-6183 : libnode-dev - security update Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Timelineinfo 01/04/2026 CVE reserved 03/30/2026 +85 days VulDB entry created 03/31/2026 +0 days Advisory disclosed 03/31/2026 +0 days VulDB entry last update Sourcesinfo Advisory: nodejs.org Status: Confirmed CVE: CVE-2026-21716 (🔒) GCVE (CVE): GCVE-0-2026-21716 GCVE (VulDB): GCVE-100-354281 Entryinfo Created: 03/31/2026 00:23 Updated: 03/31/2026 00:40 Changes: 03/31/2026 00:23 (63), 03/31/2026 00:40 (2) Complete: 🔍 Cache ID: 99:07C:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸