Security readout for executives and security teams
Plain-English summary
WP Fusion Lite for WordPress has a CSRF flaw that could let an attacker trick a logged-in administrator into deleting the plugin's logs. The cited sources do not describe site takeover or data theft, but erased logs can reduce auditability during an incident.
Executive priority
Treat as a moderate hygiene and auditability issue. Prioritize sites where WP Fusion Lite logs support incident investigation or compliance reporting, but do not rank it alongside unauthenticated takeover vulnerabilities based on the provided evidence.
Technical view
CVE-2021-34661 is a CWE-352 issue in WP Fusion Lite through 3.37.18. The vulnerable path is tied to show_logs_section in includes/admin/logging/class-log-handler.php and permits dropping all plugin logs. CVSS 3.1 is 6.1 with required user interaction and low integrity/availability impact.
Likely exposure
Exposure is limited to WordPress sites running WP Fusion Lite versions up to and including 3.37.18, especially where administrators remain authenticated while browsing externally supplied content.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction, consistent with CSRF: a victim with relevant access must be induced to trigger the vulnerable action.
Researcher notes
The public record identifies CSRF in the logging handler and log deletion as the impact. The source bundle does not provide a named fixed version, exploit-in-the-wild evidence, or broader product impact beyond WP Fusion Lite through 3.37.18.
Mitigation direction
- Inventory WordPress sites for WP Fusion Lite and affected versions.
- Check vendor or WordPress plugin guidance for the fixed release before upgrading.
- Disable or remove the plugin if log integrity is critical and no fix is confirmed.
- Reduce administrator exposure to untrusted links while authenticated.
- Preserve independent web, WAF, and host logs outside the plugin.
Validation and detection
- Confirm whether WP Fusion Lite is installed and version is 3.37.18 or older.
- Review plugin logs for unexpected deletion or unexplained gaps.
- Verify vendor guidance or code changes add CSRF protection for log deletion.
- Confirm administrators use separate accounts and protected sessions for WordPress admin work.
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-352: 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-2021-34661 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:N/I:L/A:L
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:N/I:L/A:L2.82.7Primary 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:N/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34661CVE reference · x_refsource_MISC
- https://plugins.trac.wordpress.org/browser/wp-fusion-lite/trunk/includes/admin/logging/class-log-handler.php?rev=2533608#L302CVE 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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.