CVE-2020-28949
PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
What is affected
| Vendor | PEAR |
|---|---|
| Product | Archive_Tar |
| Weakness | CWE-74 |
The vulnerability
PEAR Archive_Tar allows an unserialization attack because phar: is blocked but PHAR: is not blocked. 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.
Required action
Apply updates per vendor instructions.
US federal civilian agencies were required to act by 15 September 2022 under BOD 22-01. The deadline is a compliance date, not a measure of severity — it says nothing about how dangerous the flaw is to anyone else.
Where this comes from
Every field on this page is taken from the CISA Known Exploited Vulnerabilities catalog, last synced 12 Nov 2026, 21:26. Nothing here is our own assessment. For the technical scoring, see the NVD record below.