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Tool Directory

CVE-2020-28948

HighPublished

Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.

Published: Nov 19, 2020
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

47.5%

Moderate · next 30 days

Percentile: 98.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.

Sources

CVE-2020-28948-and-CVE-2020-28949PoC
Proof-of-concept demonstration for CVE-2020-28948 and CVE-2020-28949, PHP Archive_Tar path traversal and arbitrary file write vulnerabilities.
PoC-for-CVE-2020-28948-CVE-2020-28949PoC
Proof-of-concept exploit for CVE-2020-28948 and CVE-2020-28949 targeting PHAR deserialization and inclusion vulnerabilities in Archive_Tar, enabling remote file deletion and code execution.
cve-2020-28948PoC
Proof-of-concept exploit for CVE-2020-28948 and CVE-2020-28949, demonstrating remote code execution vulnerabilities in web applications.

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