Live › vulnerability › CVE-2020-36193
Go to dashboardPEAR Archive_Tar, a PHP library for reading and writing tar archives, does not check symbolic links properly, allowing writes outside the intended directory during extraction. An attacker who supplies a crafted tar archive can write files to arbitrary locations the PHP process can reach.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| PEAR Archive_Tar | vendor | – | – |
| php archive tar | vendor | <= 1.4.11 | – |
| fedoraproject fedora | vendor | = 32 | – |
| fedoraproject fedora | vendor | = 33 | – |
| fedoraproject fedora | vendor | = 34 | – |
| fedoraproject fedora | vendor | = 35 | – |
| debian linux | vendor | = 9.0 | – |
| debian linux | vendor | = 10.0 | – |
| drupal | vendor | >= 7.0, < 7.78 | 7.78 |
| drupal | vendor | >= 8.9.0, < 8.9.13 | 8.9.13 |
| drupal | vendor | >= 9.0.0, < 9.0.11 | 9.0.11 |
| drupal | vendor | >= 9.1.0, < 9.1.3 | 9.1.3 |
Unknown from the sources.
Upgrade PEAR Archive_Tar to a fixed version (fixed version not stated in sources); check the vendor advisory for the exact release.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
PEAR Archive_Tar Tar.php allows write operations with directory traversal due to inadequate checking of symbolic links. PEAR stands for PHP Extension and Application Repository and it is an open-source framework and distribution system for reusable PHP components with known usage in third-party products such as Drupal Core and Red Hat Linux.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2020-36193")
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