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CVE-2020-28949: PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
PEAR Archive_Tar · in CISA KEV since 2022-08-25
2022-08-25added to KEV
2022-09-15federal remediation due date
84.55%EPSS exploit probability (30 days) 99.7th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
644days from NVD publication to KEV
What it is
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 (CISA)
Apply updates per vendor instructions.
| CWE | CWE-74 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2020-11-19 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2020-28949.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.