ESB-2026.4426 PUBLISHED CVSS 8.199999809265137 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4426 node-tar security update 30 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: node-tar Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2024-28863 CVE-2026-26960 CVE-2026-24842 CVE-2026-23745 CVE-2026-31802 CVE-2026-29786 Original Bulletin: https://lists.debian.org/debian-lts-announce/2026/04/msg00033.html Comment: CVSS (Max): 8.2 CVE-2026-24842 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N) CVSS Source: [GitHub], NIST Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N EPSS (Max): 0.6% (70th) CVE-2024-28863 2026-04-29 - --------------------------BEGIN INCLUDED TEXT-------------------- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4552-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Daniel Leidert April 29, 2026 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : node-tar Version : 6.0.5+ds1+~cs11.3.9-1+deb11u3 CVE ID : CVE-2024-28863 CVE-2026-23745 CVE-2026-24842 CVE-2026-26960 CVE-2026-29786 CVE-2026-31802 Multiple vulnerabilities have been discovered in node-tar, a Node.js module to read and write portable tar archives. CVE-2024-28863 Generating a large number of sub-folders can consume memory on the system and even crash the Node.js client within a few seconds using a path with too many sub-folders inside. CVE-2026-23745 When preservePaths is false, the linkpath of Link (hardlink) and SymbolicLink entries fail to be sanitized, allowing malicious archives to bypass the extraction root restriction, leading to arbitrary file overwrites via hardlinks and symlink poisoning via absolute symlink targets. The fix for this issue introduces multiple of the following vulnerabilties. CVE-2026-24842 The security check for hardlink entries allows an attacker to craft a malicious TAR archive that bypasses path traversal protections and creates hardlinks to arbitrary files outside the extraction directory. CVE-2026-26960 An attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. CVE-2026-29786 An attacker-controlled archive can create a hardlink that points outside the extraction directory by using a drive-relative link target. CVE-2026-31802 An attacker-controlled archive can create a hardlink that points outside the extraction directory by using a drive-relative link target. For Debian 11 bullseye, these problems have been fixed in version 6.0.5+ds1+~cs11.3.9-1+deb11u3. We recommend that you upgrade your node-tar packages. For the detailed security status of node-tar please refer to its security tracker page at: https://security-tracker.debian.org/tracker/node-tar Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1
8.199999809265137
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Affected Products

VendorProductVersions
Debiannode-tar

Timeline

References

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