CVE-2020-36193

Name: CVE-2020-36193
Creator: NVD / NIST
Published: 2021-01-18T20:15:12.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10Actively ExploitedEPSS 70.59%

Last modified Jun 17, 2026

CVE-2020-36193 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.. CISA has confirmed active exploitation in the wild. EPSS estimates a 70.59% chance of exploitation in the next 30 days.

Description

Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

70.59%

99.3th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 15, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php	Archive Tar	<= 1.4.11
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Drupal	Drupal	>= 7.0, < 7.78
Drupal	Drupal	>= 8.9.0, < 8.9.13
Drupal	Drupal	>= 9.0.0, < 9.0.11
Drupal	Drupal	>= 9.1.0, < 9.1.3

References

https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916Patch
https://lists.debian.org/debian-lts-announce/2021/01/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00007.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH/Broken Link
https://security.gentoo.org/glsa/202101-23Third Party Advisory
https://www.debian.org/security/2021/dsa-4894Third Party Advisory
https://www.drupal.org/sa-core-2021-001Third Party Advisory
https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916Patch
https://lists.debian.org/debian-lts-announce/2021/01/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00007.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/Broken Link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH/Broken Link
https://security.gentoo.org/glsa/202101-23Third Party Advisory
https://www.debian.org/security/2021/dsa-4894Third Party Advisory
https://www.drupal.org/sa-core-2021-001Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-36193US Government Resource

Timeline

Published: Jan 18, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-36193?

Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.

How severe is CVE-2020-36193?

CVE-2020-36193 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 70.59% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-36193?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36193?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST