Security readout for executives and security teams
Plain-English summary
CVE-2021-33950 is a high-severity information disclosure issue reported in OpenKM v6.3.10. The vulnerable XMLTextExtractor function may expose sensitive information. The source bundle links upstream issue, pull request, and commit evidence, but does not name a fixed release.
Executive priority
Treat this as a high-priority confidentiality risk for any OpenKM v6.3.10 environment. Prioritize internet-facing or untrusted-document workflows first, but avoid emergency claims without exploitation evidence.
Technical view
The CVE describes a CWE-611 weakness in OpenKM v6.3.10 involving XMLTextExtractor. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, with high confidentiality impact and no integrity or availability impact.
Likely exposure
Exposure is most likely in organizations running OpenKM v6.3.10, especially where XML or document extraction workflows process untrusted content. The source bundle’s structured affected-product metadata is incomplete.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates remote unauthenticated attack potential, but exploit availability is not established here.
Researcher notes
CWE-611 points to XML external entity handling. The upstream commit and PR are the key remediation artifacts. The bundle lacks a fixed version, affected CPEs, and exploitation evidence, so validation should be code- and deployment-focused.
Mitigation direction
- Inventory OpenKM deployments and confirm whether v6.3.10 is present.
- Review upstream PR, issue, and commit for the vendor project fix.
- Apply the project fix or a vendor-supported release containing it.
- Restrict untrusted document processing until remediation is confirmed.
- Monitor vendor guidance for a named fixed version.
Validation and detection
- Confirm XMLTextExtractor code includes the upstream remediation commit.
- Verify deployed OpenKM version and build provenance.
- Review logs for suspicious document extraction failures or unusual XML processing activity.
- Confirm external entity processing is disabled in relevant XML parser paths.
- Retest document ingestion safely after applying the fix.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-611: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-33950 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of XML External Entity Reference
Improper Restriction of XML External Entity Reference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.