Security readout for executives and security teams
Plain-English summary
This is a low-severity stored XSS issue in the WordPress Download Monitor plugin up to version 4.4.6. It requires an authenticated administrator-level user to save malicious content and another user to view it, limiting real-world exposure mostly to compromised admin accounts or multi-admin sites.
Executive priority
Treat this as a maintenance-priority WordPress plugin issue, not an emergency. Prioritize faster if the site has many administrators, delegated content managers, or recent administrator account compromise concerns.
Technical view
CVE-2021-23174 is CWE-79 stored cross-site scripting in WPChill Download Monitor. The provided record names post_title and downloadable_file_version[0] as affected parameters. CVSS 3.1 is 3.4: network reachable, low complexity, high privileges required, user interaction required, scope changed, low integrity impact.
Likely exposure
Exposure is likely limited to WordPress sites running Download Monitor version 4.4.6 or earlier, especially where multiple administrators manage download entries. Single-admin sites still carry risk if the administrator account is compromised.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires administrator-level authentication and a victim interaction path, so this is more relevant for insider risk, compromised admin accounts, or delegated site administration.
Researcher notes
The provided sources identify affected parameters and privilege requirements but do not provide a fixed version in the bundle. Avoid assuming exploitation in the wild. Validate exposure through plugin version inventory and administrative access review rather than external scanning alone.
Mitigation direction
- Inventory WordPress sites using the Download Monitor plugin.
- Check whether Download Monitor is version 4.4.6 or earlier.
- Review vendor or WordPress plugin guidance for the fixed version.
- Update the plugin when a vendor-supported fixed release is available.
- Remove or disable the plugin if it is unnecessary.
- Limit administrator access to trusted accounts only.
Validation and detection
- Confirm installed Download Monitor versions across managed WordPress sites.
- Verify no affected instance remains on version 4.4.6 or earlier.
- Review administrator accounts for unnecessary or stale access.
- Check recent download entry changes by privileged users.
- Confirm remediation guidance against the vendor or Patchstack entry.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-23174 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
- Low
- CVSS
- 3.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/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:H/UI:R/S:C/C:N/I:L/A:N1.71.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.4LowVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.