Security readout for executives and security teams
Plain-English summary
This is a reflected cross-site scripting issue in a WordPress WooCommerce Moneybird integration plugin. A victim who follows a malicious link could have attacker-controlled script run in their browser. Business impact is mainly account/session risk and website administration exposure, not direct server takeover from the cited evidence.
Executive priority
Treat as a moderate WordPress plugin risk. It warrants timely remediation where the plugin is installed, especially on revenue or admin-heavy WooCommerce sites, but the cited evidence does not support emergency active-exploitation handling.
Technical view
CVE-2021-38349 affects Integration of Moneybird for WooCommerce through version 2.1.1. The issue is CWE-79 reflected XSS via the error_description parameter in templates/wcmb-admin.php. CVSS 3.1 is 6.1 with network access, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is limited to WordPress sites running the affected Integration of Moneybird for WooCommerce plugin versions up to and including 2.1.1.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation. Exploitation requires user interaction, typically a targeted link or request causing reflected script execution in a victim browser.
Researcher notes
The strongest evidence is the CVE description, Wordfence advisory reference, and WordPress Trac source path. The bundle does not identify a fixed version, exploitation in the wild, or broader product impact, so avoid expanding scope beyond the named plugin and versions.
Mitigation direction
- Inventory WordPress sites for the Woo Moneybird plugin and exact version.
- Check vendor or WordPress plugin guidance for a fixed or maintained release.
- Update to a vendor-confirmed fixed version if available.
- Disable or remove the plugin if it is unused or unmaintained.
- Prioritize administrator-facing exposure because XSS impact depends on victim privileges.
Validation and detection
- Confirm whether any site runs version 2.1.1 or earlier.
- Review the affected template handling of error_description for unsafe output.
- Check web logs for unusual requests containing script-like input in that parameter.
- Verify remediation in staging before production changes.
- Re-test the relevant page for safe output encoding after remediation.
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-2021-38349 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-2021-38349CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/woo-moneybird/tags/2.1.1/templates/wcmb-admin.php#L8CVE 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.