What is CVE-2022-45326?

CVE-2022-45326 is a medium-severity vulnerability in Kwoksys Information Server, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.9/10. Published 2022-12-06.

How severe is CVE-2022-45326?

Medium severity. CVSS v3 base score is 4.9 out of 10.

XXE in Kwoksys Information Server

CVE-2022-45326

An XML external entity (XXE) injection vulnerability in Kwoksys Kwok Information Server before v2.9.5.SP31 allows remote authenticated users to conduct server-side request forgery (SSRF) attacks.

Vulnerability class: XXE (XML External Entity)

Published 2022-12-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (65.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Kwoksys Information Server — versions 2.9.5

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.kwoksys.com/wiki/index.php (Release Notes, Vendor Advisory)
www.navsec.net/2022/11/12/kwoksys-xxe.html (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-45326?: CVE-2022-45326 is a medium-severity vulnerability in Kwoksys Information Server, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.9/10. Published 2022-12-06.
How severe is CVE-2022-45326?: Medium severity. CVSS v3 base score is 4.9 out of 10.