CVE-2020-36193
HighExploitedPublic exploitDirectory 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
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 25, 2022 | Sep 15, 2022 | Not reported |
| Industry KEV feed | Aug 25, 2022 | Sep 15, 2022 | Known |
| CIRCL KEV | Aug 25, 2022 | Sep 15, 2022 | Not reported |
| ENISA EUVD | Aug 25, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
164 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| DrupalDrupal | >= 7.0.0 | 7.78 |
| Archive TarPHP | See advisory | 1.4.11 |
| Debian LinuxDebian | 10.0, 9.0 | n/a |
| FedoraFedoraproject | 32, 33, 34, 35 | n/a |
| nextcloudarch | See advisory | 20.0.6-1 |
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
Publicly disclosed
Apr 22, 2021
Added to CISA KEV
Aug 25, 2022
Added to Industry KEV feed
Aug 25, 2022
Added to CIRCL KEV
Aug 25, 2022
Added to ENISA EUVD
Aug 25, 2022
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
- advisoryRHSA-2022:6541
- advisoryRHSA-2022:6542
- advisoryRHSA-2022:7340
- advisoryhttps://bugzilla.suse.com/1189591
- advisoryGHSA advisory
FAQ
Common Questions.
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.
Affected: Drupal versions >= 7.0.0; Archive Tar (PHP); Debian Linux versions 10.0, 9.0, among others. The full list is in the CVE brief.
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.
Yes. It was added on Aug 25, 2022 with a federal remediation due date of Sep 15, 2022.
Public exploit code is available.
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.
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