ACTIVELY EXPLOITED
CVE-2020-28949: PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
| Vendor | PEAR |
|---|---|
| Product | Archive_Tar |
| Actively exploited | Yes |
| Added to CISA KEV | 25 Aug 2022 |
| CISA federal deadline | 15 Sep 2022 |
| Weakness (CWE) | CWE-74 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
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.
SOURCES
Other PEAR flaws
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.