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Vulnerability Intelligence

CVE-2020-36193

HighExploitedPublic exploit

Directory Traversal in Archive_Tar

Published Apr 22, 2021 · Updated Sep 8, 2026 · Also known as BIT-drupal-2020-36193, DEBIAN-CVE-2020-36193, DLA-2530-1, DLA-2621-1, DSA-4894-1, GHSA-rpw6-9xfx-jvcx, SUSE-SU-2021:2926-1, SUSE-SU-2021:3006-1, SUSE-SU-2021:3018-1, UBUNTU-CVE-2020-36193, USN-4723-1

Key Facts

Patch immediately
  • CVE-2020-36193 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Drupal, Archive Tar (PHP), Debian Linux and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 25, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
  • EPSS estimates a 71% probability of exploitation in the next 30 days.
  • Fixed versions are available, including apache2-mod_php72 7.2.5-1.69.1, apcu-panel 5.1.18-1.module+el8.3.0+7685+72d70b58, Drupal 7.78.0.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.5

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

EPSS (30-day exploit likelihood)

71%

Higher than 99.3% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2020-36193 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVAug 25, 2022Sep 15, 2022Not reported
Industry KEV feedAug 25, 2022Sep 15, 2022Known
CIRCL KEVAug 25, 2022Sep 15, 2022Not reported
ENISA EUVDAug 25, 2022n/aNot reported

Required action: Apply updates per vendor instructions.

Affected Products

164 affected entries in total
ProductAffected versionsFixed in
DrupalDrupal>= 7.0.07.78
Archive TarPHPSee advisory1.4.11
Debian LinuxDebian10.0, 9.0n/a
FedoraFedoraproject32, 33, 34, 35n/a
nextcloudarchSee advisory20.0.6-1
20 more affected products in the full CVE brief

Patched Releases

apache2-mod_php72

7.2.5-1.69.1

apcu-panel

5.1.18-1.module+el8.3.0+7685+72d70b58

Drupal

7.78.0, 8.9.13, 9.0.11, 9.1.3, 9.1.7-1, 7.78

drupal7

7.52-2+deb9u14, 7.78-r0

libzip

1.6.1-1.module_el8.6.0+2750+78feabcb, 1.6.1-1.module+el8.3.0+7685+72d70b58, 1.6.1-1.module+el8.6.0+789+2130c178

libzip-devel

1.6.1-1.module+el8.3.0+7685+72d70b58

libzip-tools

1.6.1-1.module+el8.3.0+7685+72d70b58

nextcloud

20.0.6-1

pear/archive_tar

1.4.13

php

7.4.19-4.module_el8.6.0+3238+624bf8b8, 7.4.19-4.module+el8.6.0+1006+0d5a469f, 7.4.19-4.module+el8.6.0+20746+7a133c42

Archive Tar

<=1.4.11

php-bcmath

7.4.19-4.module+el8.6.0+20746+7a133c42

php-cli

7.4.19-4.module+el8.6.0+20746+7a133c42

php-common

7.4.19-4.module+el8.6.0+20746+7a133c42

php-dba

7.4.19-4.module+el8.6.0+20746+7a133c42

php-dbg

7.4.19-4.module+el8.6.0+20746+7a133c42

php-devel

7.4.19-4.module+el8.6.0+20746+7a133c42

php-embedded

7.4.19-4.module+el8.6.0+20746+7a133c42

php-enchant

7.4.19-4.module+el8.6.0+20746+7a133c42

php-ffi

7.4.19-4.module+el8.6.0+20746+7a133c42

php-fpm

7.4.19-4.module+el8.6.0+20746+7a133c42

php-gd

7.4.19-4.module+el8.6.0+20746+7a133c42

php-gmp

7.4.19-4.module+el8.6.0+20746+7a133c42

php-intl

7.4.19-4.module+el8.6.0+20746+7a133c42

php-json

7.4.19-4.module+el8.6.0+20746+7a133c42

Timeline

  1. Publicly disclosed

    Apr 22, 2021

  2. Added to CISA KEV

    Aug 25, 2022

  3. Added to Industry KEV feed

    Aug 25, 2022

  4. Added to CIRCL KEV

    Aug 25, 2022

  5. Added to ENISA EUVD

    Aug 25, 2022

  6. Last updated

    Sep 8, 2026

Weakness Type

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')

References

15 more references in the full CVE brief

FAQ

Common Questions.

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