CVE-2020-36193 — PEAR Archive_Tar Improper Link Resolution Vulnerability
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.
Published
2021-01-18T19:24:18.000Z
Last modified
2025-10-21T23:35:29.738Z
CISA KEV — Actively Exploited
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Yes — actively exploited. Added to the CISA KEV catalog on 2022-08-25. Ransomware use: Unknown.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
Open in Sigma generator →
07Related CVEs
08Timeline
- Published: 2021-01-18T19:24:18.000Z
- Last modified: 2025-10-21T23:35:29.738Z
- Added to CISA KEV: 2022-08-25
- BOD 22-01 due: 2022-09-15
09References
Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.
Read the API reference →