Security readout for executives and security teams
Plain-English summary
CVE-2021-38333 is a reflected cross-site scripting flaw in the WP Scrippets WordPress plugin through version 1.5.1. An attacker could trick a user into opening a crafted link that causes script to run in that user’s browser. Business impact is usually account/session risk and content tampering, not direct server takeover.
Executive priority
Treat this as a moderate web application exposure. Prioritize externally reachable WordPress sites and administrator-heavy environments. It is not listed as known exploited in the provided data, but unfixed XSS in plugins can still create user and session risk.
Technical view
The issue is CWE-79 reflected XSS caused by a reflected $_SERVER["PHP_SELF"] value in wp-scrippets.php. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is limited to WordPress sites with the WP Scrippets plugin installed at version 1.5.1 or earlier. The source bundle does not identify affected CPEs, hosting environments, or whether later fixed versions exist.
Exploitation context
The CVE requires user interaction, so exploitation depends on getting a target to follow a crafted URL or similar lure. The bundle does not show CISA KEV listing or any cited evidence of active exploitation in the wild.
Researcher notes
The evidence supports reflected XSS through PHP_SELF reflection in wp-scrippets.php and affects WP Scrippets through 1.5.1. The bundle does not provide exploit telemetry, a patch version, or maintainer remediation notes, so remediation should be confirmed against current vendor or WordPress plugin information.
Mitigation direction
- Inventory WordPress sites for WP Scrippets version 1.5.1 or earlier.
- Check vendor or WordPress plugin guidance for a fixed release or replacement.
- Disable or remove WP Scrippets where it is not business-critical.
- Apply normal WordPress hardening and least-privilege admin practices.
- Use web filtering or WAF controls as compensating protection if available.
Validation and detection
- Confirm whether WP Scrippets is installed and record the version.
- Review the plugin source for unescaped PHP_SELF reflection in wp-scrippets.php.
- Check WordPress and web server logs for suspicious requests targeting plugin paths.
- Verify any upgrade, removal, or compensating control in a staging environment.
- Document remaining sites where the plugin cannot yet be removed.
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-2021-38333 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-2021-38333CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/wp-scrippets/tags/1.5.1/wp-scrippets.php#L123CVE 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.