Security readout for executives and security teams
Plain-English summary
This issue affects the WP DSGVO Tools (GDPR) WordPress plugin up to version 3.1.23. An unauthenticated attacker could store malicious script in site content, causing it to run when users visit affected pages. Business impact is mainly account/session exposure, content tampering, and reputational risk on public WordPress sites.
Executive priority
Prioritize remediation for public WordPress sites using this plugin, especially marketing or customer-facing domains. The vulnerability is unauthenticated and stored, and one cited source reports exploitation. Treat as a near-term web risk, not a routine backlog item.
Technical view
CVE-2021-4358 is stored cross-site scripting in WP DSGVO Tools (GDPR), attributed to insufficient input sanitization and output escaping through an unspecified parameter. The CVSS 3.1 score is 7.2 with network access, low complexity, no privileges, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites using WP DSGVO Tools (GDPR) versions up to and including 3.1.23. The provided affected metadata is incomplete, so confirm installed plugin identity and version from WordPress inventory rather than CPE matching.
Exploitation context
CISA KEV is false for this CVE. However, the cited Nintechnet source reports active exploitation of a patched WP DSGVO Tools vulnerability. The bundle does not provide exploit scale, dates, indicators, affected parameter details, or proof-of-concept material.
Researcher notes
Key gaps remain: the vulnerable parameter, exact fixed version, and exploitation indicators are not included in the bundle. Validation should focus on plugin versioning, content integrity, and source-guided vendor advisories without attempting reproduction payloads.
Mitigation direction
- Identify all WordPress sites running WP DSGVO Tools (GDPR).
- Upgrade to the vendor or WordPress-listed fixed release if available.
- Disable or remove the plugin until fixed status is verified.
- Review vendor, Wordfence, and Nintechnet guidance for version-specific remediation.
- Purge injected content after remediation if compromise is found.
Validation and detection
- Check installed WP DSGVO Tools (GDPR) plugin versions against 3.1.23 and earlier.
- Review public pages and plugin-managed content for unexpected script injection.
- Inspect web and WordPress logs for unauthenticated suspicious submissions to plugin endpoints.
- Confirm output is safely escaped after applying the vendor fix.
- Verify no administrative sessions or accounts show unusual activity.
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-2021-4358 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:N/S:C/C:L/I:L/A:N3.92.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6c18ab1b-02f1-4679-8cff-679d98dc9f4a?source=cveCVE reference
- https://wordpress.org/support/topic/weiterleitung-redirects/CVE reference
- https://blog.nintechnet.com/wordpress-wp-dsgvo-tools-gdpr-plugin-patched-vulnerability-actively-exploited/CVE reference
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.