What is CVE-2022-4995?

CVE-2022-4995 is a critical-severity vulnerability in Weaver Network Co., Ltd. E-cology 9.0, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-08-07.

How severe is CVE-2022-4995?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Weaver Network Co., Ltd. E-cology 9.0

CVE-2022-4995

Weaver (Fanwei) E-cology 9.0 versions prior to 10.52 contain a file upload vulnerability that allows a remote, unauthenticated attacker to upload arbitrary files, including JSP webshells, by submitting a multipart/form-data POST request to…

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weaver Network Co., Ltd. E-cology 9.0 — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2022-4995?: CVE-2022-4995 is a critical-severity vulnerability in Weaver Network Co., Ltd. E-cology 9.0, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-08-07.
How severe is CVE-2022-4995?: Critical severity. CVSS v3 base score is 9.8 out of 10.