CVE-2026-23745

CVE-2026-23745: node-tar Arbitrary File Overwrite Research: Joshua van Rijswijk Description PoC for CVE-2026-23745 , a high-severity path traversal vulnerability in node-tar 7.5.2. The library fails to sanitize absolute paths in the linkpath field for Hardlinks and Symlinks. This allows malicious...

tar security, bug fix, and enhancement update

2:1.34-13 - Backport upstream patches for CVE-2026-18477, fixes a bug where incremental restore with cyclic renames between backups may create a temporary directory at an archive-controlled path outside the extraction tree. The fix for CVE-2025-45582 already prevents exploiting this problem, so i...

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Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f794-5jv7-7672.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...

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...

SUSE CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

Amazon Linux 2023 : python3.14, python3.14-devel, python3.14-freethreading (ALAS2023-2026-1999)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1999 advisory. When using the configparser module to write configuration filescontaining multi-line text values with carriage return characters \r theresulting file could be injected with unexpected keys and...

CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

UBUNTU-CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18508

CVE-2026-18508 : GNU tar is vulnerable when using --one-top-level; hardlink targets are not confined to the designated top-level directory and may resolve against the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary and, with a preexisting sym...

EUVD-2026-52327

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18508 Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18508 Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

CVE-2026-18508

A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary...

PT-2026-67425

Name of the Vulnerable Software and Affected Versions GNU tar affected versions not specified Description A flaw exists when extracting an archive using the --one-top-level option. Hardlink targets are not restricted to the designated top-level directory and may resolve relative to the extraction...

python: Python Tarfile: Unexpected file ownership when extracting hardlinks

A flaw was found in the Python Tarfile.extract function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the filter parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leadin...

python: Python Tarfile: Unexpected file ownership when extracting hardlinks

A flaw was found in the Python Tarfile.extract function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the filter parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leadin...

python: Python Tarfile: Unexpected file ownership when extracting hardlinks

A flaw was found in the Python Tarfile.extract function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the filter parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leadin...

python: Python Tarfile: Unexpected file ownership when extracting hardlinks

A flaw was found in the Python Tarfile.extract function. This vulnerability occurs when processing untrusted tar files containing hardlinks, as the filter parameter is not correctly enforced. An attacker could exploit this to write files with unintended user or group ownership, potentially leadin...