Directory Traversal in Archive_Tar
CISA confirms exploitation of this vulnerability in real attacks. Prioritise checking whether your application is affected. CISA KEV · CC0 1.0
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.
:exclamation: Note:
There was an initial fix for this vulnerability made in version 1.4.12. That fix introduced a bug which was fixed in 1.4.13. Therefore we have set the first-patched-version to 1.4.13 which the earliest working version that avoids this vulnerability.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | pear/archive_tar | < 1.4.13 | 1.4.13 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-36193
- https://github.com/pear/Archive_Tar/issues/35
- https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916
- https://www.drupal.org/sa-core-2021-001
- https://www.debian.org/security/2021/dsa-4894
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-36193
- https://security.gentoo.org/glsa/202101-23
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKD5WEFA4WT6AVTMRAYBNXZNLWZHM7FH
- 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/FOZNK4FIIV7FSFCJNNFWMJZTTV7NFJV2
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.debian.org/debian-lts-announce/2021/04/msg00007.html
- https://lists.debian.org/debian-lts-announce/2021/01/msg00018.html
- https://github.com/pear/Archive_Tar
- https://github.com/FriendsOfPHP/security-advisories/blob/master/pear/archive_tar/CVE-2020-36193.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:H- Weakness (CWE)
CWE-22, CWE-59- Platform
- Composer
- Package
pear/archive_tar- Disclosed
- 22.04.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-rpw6-9xfx-jvcx - CC BY 4.0
Vulnerability history: pear/archive_tar
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 11.2020 07.2023
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- Critical 1
- High 4
Disclosures per year
- 2020: 1
- 2021: 2
- 2022: 1
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 0
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Directory Traversal in Archive_Tar this entry
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