CVE-2026-39243

decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries type === 'link', the x.linkname field from the archive is passed directly to fs.link without validation index.js line 113. An...

PT-2026-56968

Name of the Vulnerable Software and Affected Versions decompress versions prior to 4.2.2 Description An issue exists during archive extraction where arbitrary hardlink creation is possible. When processing hardlink entries type === 'link', the x.linkname field from the archive is passed directly ...

CVE-2026-39243

The CVE-2026-39243 entry concerns decompress before 4.2.2, where archive extraction can create arbitrary hardlinks. During processing of hardlink entries (type === 'link'), the x.linkname field is passed directly to fs.link() without validation, enabling an attacker to craft an archive whose hard...

CVE-2026-39243

decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries type === 'link', the x.linkname field from the archive is passed directly to fs.link without validation index.js line 113. An...

PT-2026-56053

Name of the Vulnerable Software and Affected Versions @xhmikosr/decompress versions prior to 10.2.1 @xhmikosr/decompress versions prior to 11.1.3 decompress versions prior to 4.3.0 Description When extracting archives to a directory, a crafted archive can read or write files outside that director...

USN-8467-2: Perl vulnerabilities

USN-8467-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 25.10. Original advisory details: It was discovered that Perl's Archive::Tar module incorrectly handled symlink and hardlink targets during extraction. An attacker could use this issue to read ...

USN-8467-2 perl vulnerabilities

USN-8467-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 25.10. Original advisory details: It was discovered that Perl's Archive::Tar module incorrectly handled symlink and hardlink targets during extraction. An attacker could use this issue to read ...

`oras-go` tar extraction: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution

Root cause The tar-extraction helper ensureLinkPath at content/file/utils.go:262-275 validates that a hardlink's target resolves inside the extract base, but then returns the original unresolved target string back to the caller: go func ensureLinkPathbaseAbs, baseRel, link, target string string,...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack through improper validation of hardlink targets during tar extraction. An attacker can access or modify files outside the intended extraction directory by crafting a malicious tarball with a hardlink entry whose target is...

GHSA-FXHP-MV3V-67QP `oras-go` tar extraction: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution

Root cause The tar-extraction helper ensureLinkPath at content/file/utils.go:262-275 validates that a hardlink's target resolves inside the extract base, but then returns the original unresolved target string back to the caller: go func ensureLinkPathbaseAbs, baseRel, link, target string string,...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack through improper validation of hardlink targets during tar extraction. An attacker can access or modify files outside the intended extraction directory by crafting a malicious tarball with a hardlink entry whose target is...

PT-2026-54777

Name of the Vulnerable Software and Affected Versions oras-go versions prior to 2.6.2 Description A path traversal issue exists in the tar-extraction helper function ensureLinkPath within content/file/utils.go. The function validates that a hardlink target resolves inside the extraction base but...

DEBIAN-CVE-2026-4360

In the Tarfile.extract function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract function...

node-tar: tar: node-tar: Arbitrary file creation via path traversal bypass in hardlink security check

A flaw was found in node-tar, a Node.js module for handling TAR archives. This vulnerability allows a remote attacker to bypass path traversal protections by crafting a malicious TAR archive. The security check for hardlink entries uses different path resolution logic than the actual hardlink...

BIT-PYTHON-MIN-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower...

BIT-PYTHON-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower...

BIT-LIBPYTHON-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower...

GO-2026-5587 Gotenberg has incomplete fix for ExifTool arbitrary file write: case-insensitive bypass and missing HardLink/SymLink tags in github.com/gotenberg/gotenberg

Gotenberg has incomplete fix for ExifTool arbitrary file write: case-insensitive bypass and missing HardLink/SymLink tags in github.com/gotenberg/gotenberg...

SUSE CVE-2026-11940

tarfile.extractall with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower...

Astra Linux – Vulnerability in busybox

A flaw was discovered in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by creating a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead...