CVE Watch—

CVE-2020-28949

PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability

CVSS

—

No CVSS

EPSS

84.6%

p100

KEV

YES

Aug 25, 2022

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

84.6%EPSS · 30 days84.6%

2026-09-172026-10-15

KEV catalog record

Product

PEAR / Archive_Tar

Vulnerability

PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability

Added to KEV

Aug 25, 2022

Remediate by

Sep 15, 2022

Known ransomware use

Summary description

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.

Notes

https://pear.php.net/bugs/bug.php?id=27002, https://www.drupal.org/sa-core-2020-013, https://access.redhat.com/security/cve/cve-2020-28949; https://nvd.nist.gov/vuln/detail/CVE-2020-28949

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