Security readout for executives and security teams
Plain-English summary
CVE-2021-38335 is a reflected cross-site scripting issue in the Wise Agent Capture Forms WordPress plugin through version 1.0. A successful attack could run attacker-controlled script in a visitor’s browser after user interaction, risking session or content manipulation. Business urgency is moderate and depends on plugin presence.
Executive priority
Treat as a moderate-priority web exposure item. It is not known exploited from the provided sources, but public WordPress forms can be targeted broadly. Prioritize internet-facing sites and remove or update affected plugin instances.
Technical view
The plugin reflects $_SERVER["PHP_SELF"] in WiseAgentCaptureForm.php without sufficient handling, enabling reflected XSS. The CVSS 3.1 score is 6.1 with network attack vector, low complexity, no privileges required, and required user interaction. The weakness maps to CWE-79.
Likely exposure
Exposure is limited to WordPress sites running Wise Agent Capture Forms version 1.0 or earlier. Public-facing sites using the plugin’s capture forms are the primary concern. The provided sources do not identify affected CPEs or broader product families.
Exploitation context
The provided sources do not show active exploitation, and this CVE is not listed as KEV. Exploitation requires user interaction and would affect the victim’s browser context rather than the server directly. No source in the bundle provides exploit maturity details.
Researcher notes
Key evidence is the CVE description and Wordfence advisory reference. The affected range is stated as up to and including 1.0. The source bundle does not provide exploit telemetry, a named patched version, or detailed remediation beyond affected-version identification.
Mitigation direction
- Inventory WordPress sites for Wise Agent Capture Forms and record installed versions.
- Update affected installations to a vendor-supported non-vulnerable release, if available.
- Disable or remove the plugin where updates or vendor guidance are unavailable.
- Review Wordfence, CVE, and vendor guidance before restoring public capture forms.
Validation and detection
- Confirm whether Wise Agent Capture Forms is installed on each WordPress site.
- Verify the installed plugin version is not 1.0 or earlier.
- Check whether public pages expose the plugin’s capture form functionality.
- Review web security scans for reflected XSS findings tied to this plugin.
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-2021-38335 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
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38335CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/wiseagentleadform/tags/2.0/WiseAgentCaptureForm.php#L44CVE reference · x_refsource_MISC
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.