CVE-2020-36193
PEAR Archive_Tar Tar.php allows write operations with directory traversal due to inadequate checking of symbolic links. PEAR stands for PHP…
Browse: All 2020 CVEs · All vendors
- CVSS score
- 7.5 High
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- CISA KEV
- Yes — actively exploited (added 2022-08-25, remediation due 2022-09-15)
- Weakness (CWE)
- CWE-22, CWE-59
- Published
- 2021-01-18
- Last modified
- 2026-06-17
- NVD status
- Analyzed
Description
PEAR Archive_Tar Tar.php allows write operations with directory traversal due to inadequate checking of symbolic links. 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.
Affected products
- php archive tar
- fedoraproject fedora
- debian debian linux
- drupal drupal
Affected ranges per NVD CPE data; confirm exact versions in the vendor advisory.
Required action (CISA)
Apply updates per vendor instructions. Federal remediation deadline: 2022-09-15.
How to prioritize this
This vulnerability is on the CISA KEV list, meaning it is being actively exploited — treat it as urgent regardless of the raw CVSS number. Use the live CVE lookup for the latest NVD data, and the CVSS 3.1 calculator to model your own environmental score. For the actively exploited vulnerabilities that matter this week, read The Exploit HQ daily security brief.
References
- https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916
- https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html
- https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH/
- https://security.gentoo.org/glsa/202101-23
FAQ
Is CVE-2020-36193 actively exploited?
Yes. CISA added CVE-2020-36193 to its Known Exploited Vulnerabilities (KEV) catalog on 2022-08-25, with a federal remediation deadline of 2022-09-15. A KEV listing means real-world exploitation is confirmed, so patching this should be prioritized above many higher-CVSS bugs that aren't being exploited.
What is the CVSS score of CVE-2020-36193?
CVE-2020-36193 has a CVSS base score of 7.5 (High). Its vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Related vulnerabilities
- CVE-2020-28949 — PEAR Archive_Tar
- CVE-2025-61624 — Fortinet Multiple Products
- CVE-2021-3199 — ONLYOFFICE Docs
- CVE-2026-104286 — Fortinet FortiMail
- CVE-2026-93616 — Check Point Multiple Products
- CVE-2026-85706 — GitLab Community Edition and Enterprise Ed
Data source: NVD & CISA KEV. Shown as-is; nothing added. Last generated from NVD data — re-check the live tool for updates.
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