GHSA-4XW3-JF9X-X7MF Duplicate Advisory: Downloader.download follows hardlinks and overwrites outside-root files

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f794-5jv7-7672. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and...

Duplicate Advisory: Downloader.download follows hardlinks and overwrites outside-root files

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f794-5jv7-7672. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and...

CVE-2026-81727

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

PYSEC-2026-3741

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

PYSEC-2026-3741

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

UBUNTU-CVE-2026-81727

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727 NLTK before 3.10.3 Hardlink File Overwrite via downloader

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727 NLTK before 3.10.3 Hardlink File Overwrite via downloader

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727 NLTK before 3.10.3 Hardlink File Overwrite via downloader

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

CVE-2026-81727

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

PT-2026-82622

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.3 Description A filesystem containment bypass exists in the Downloader.download and Downloader.incr download methods. Attackers with write access to a shared downloader directory can create hardlinks pointing to fil...

CVE-2026-81727: Improper Link Resolution Before File Access

NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows attackers to overwrite files outside the install root through pre-existing hardlinks. Attackers with write access to a shared downloader...

Linux Distros Unpatched Vulnerability : CVE-2026-81727

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows...

CVE-2026-81030

Mage AI does not confine the paths accepted by its browser-items API to the project directory. BrowserItemResource in mageai/api/resources/BrowserItemResource.py passes a caller-supplied path to the filesystem read and write helpers without calling the containment helper that the sibling...

Cloudreve WebDAV (`/dav`) has Path Traversal / Broken Access Control — scoped DAV credential escapes its configured account root

Summary A Cloudreve WebDAV account stores a uri that defines the account's root folder. The WebDAV request handler stripPrefix in pkg/webdav/webdav.go trims the /dav prefix from the request path and joins the remainder to that root with fs.URI.JoinRaw, but never checks that the joined URI stays...

IzPack has Path Traversal in UnpackerBase that allows writing files outside the installation directory via malicious pack entries

Summary IzPack's UnpackerBase.unpack resolves pack-file target paths without any canonical-path or directory-containment check. An attacker who distributes a trojanized installer JAR the format is unsigned can include pack entries whose targetPath contains ../ sequences. When a victim runs the...

Path traversal in apimock-server's file-serving fallback

The file-serving fallback joined a request-derived path onto the configured response directory and checked only that the result existed, never that it stayed inside that directory. A request containing a raw .. segment could read any file readable by the process, returned with HTTP 200. Read-only...

BIT-PYTHON-2026-19672 tarfile extraction filter bypass allows creation of directories outside the destination

The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name...