How severe is CVE-2022-44900?

CVE-2022-44900 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2022-44900 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-44900?

CVE-2022-44900 affects Py7zr Project Py7zr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-44900?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-44900 published?

CVE-2022-44900 was published on 2022-12-06 and last updated on 2026-06-17.

CVE-2022-44900

CVE-2022-44900 is a critical-severity vulnerability in Py7zr Project Py7zr with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Py7zr Project Py7zr
Published: 2022-12-06
Last modified: 2026-06-17

Description

A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.

Frequently asked questions

What is CVE-2022-44900?: A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.
How severe is CVE-2022-44900?: CVE-2022-44900 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2022-44900 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-44900?: CVE-2022-44900 affects Py7zr Project Py7zr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-44900?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-44900 published?: CVE-2022-44900 was published on 2022-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:py7zr_project:py7zr:*:*:*:*:*:python:*:*

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