What is CVE-2021-33950?

CVE-2021-33950 is a high-severity vulnerability in Openkm, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2023-02-17.

How severe is CVE-2021-33950?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Openkm

CVE-2021-33950

An issue discovered in OpenKM v6.3.10 allows attackers to obtain sensitive information via the XMLTextExtractor function.

Vulnerability class: XXE (XML External Entity)

Published 2023-02-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Openkm — versions 6.3.10

Weakness classification (CWE)

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

References

github.com/openkm/document-management-system/pull/288 (Patch)
github.com/openkm/document-management-system/issues/287 (Issue Tracking)
github.com/openkm/document-management-system/commit/ce1d82329615aea6aa9f2cc6508… (Patch)

Frequently asked questions

What is CVE-2021-33950?: CVE-2021-33950 is a high-severity vulnerability in Openkm, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2023-02-17.
How severe is CVE-2021-33950?: High severity. CVSS v3 base score is 7.5 out of 10.