CVE-2020-28949
PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability
- High 7.8
- Exploited: added to CISA KEV 25 Aug 2022
Description
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
Key facts
- Published
- 19 Nov 2020
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 25 Aug 2022
- KEV fix due
- 15 Sep 2022
- EPSS
- 84.554% likely to be exploited in the next 30 days, higher than 99.708% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 19 Nov 2020 Published
- 25 Aug 2022 CVE-2020-28949 added to CISA KEV
- 25 Aug 2022 Added to the CISA KEV catalogue