Node-RED Storage library.js getLibraryEntry/saveLibraryEntry path path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in Node-RED. The affected element is the function getLibraryEntry/saveLibraryEntry of the file packages/node_modules/@node-red/runtime/lib/storage/localfilesystem/library.js of the component Storage Module. Performing a manipulation of the argument path results in path traversal. This vulnerability is known as CVE-2026-71269. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Node-RED (affected version unknown). It has been classified as critical. This affects the function getLibraryEntry/saveLibraryEntry of the file packages/node_modules/@node-red/runtime/lib/storage/localfilesystem/library.js of the component Storage Module. The manipulation of the argument path with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Node-RED's local-filesystem library storage module (getLibraryEntry() and saveLibraryEntry() in packages/node_modules/@node-red/runtime/lib/storage/localfilesystem/library.js), reachable via GET/POST /library/:lib/:type/*path, joins the user-supplied path parameter directly into the filesystem path via fspath.join(libDir, type, path) with no traversal sanitization, containment check, or path normalization/prefix verification. An authenticated user (including read-only-scoped tokens for the read path) can supply a path containing `../` sequences to read arbitrary files outside the library directory; a user with write access can write arbitrary files, enabling remote code execution via SSH authorized_keys or cron injection. This is a distinct, separately unpatched traversal from the previously fixed CVE-2021-21298 (Projects API).

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-71269 since 08/05/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/05/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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• Node-RED

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CPE 2.2info

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