Security readout for executives and security teams
Plain-English summary
This is a critical file-upload flaw in the WooCommerce Wholesale Lead Capture WordPress plugin. An attacker may be able to upload dangerous files to a vulnerable site, potentially leading to full site compromise. Public sources do not confirm active exploitation or a named fixed version.
Executive priority
Prioritize within emergency WordPress maintenance, especially for internet-facing commerce sites. The business risk is site takeover, data exposure, or disruption. Because patch details are incomplete in supplied sources, teams should rapidly verify exposure and follow current vendor guidance.
Technical view
CVE-2026-27540 is CWE-434: unrestricted upload of a dangerous file type in Rymera’s woocommerce-wholesale-lead-capture plugin. The CVSS 3.1 score is 9.0, with network attack vector, no privileges, no user interaction, high complexity, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
WordPress/WooCommerce sites using Woocommerce Wholesale Lead Capture versions through <= 2.0.3.1 should be treated as potentially exposed. The source bundle’s affected-version metadata is inconsistent, so validate installed plugin name and version directly.
Exploitation context
No CISA KEV listing is provided, and the supplied sources do not state active exploitation. The vulnerability class can be severe because dangerous file uploads may enable attacker-controlled code or content on a web server, but exploitation details are not provided.
Researcher notes
The provided data has version ambiguity: the CVE description says through <= 2.0.3.1, while the Patchstack URL references 1.17.8. Treat this as requiring source verification before broad conclusions. Do not assume exploitation in the wild from the supplied evidence.
Mitigation direction
- Inventory WordPress sites for the woocommerce-wholesale-lead-capture plugin.
- Check Rymera, WordPress plugin, and Patchstack guidance for a fixed version.
- Update if a vendor-supported fixed release is available.
- Disable or remove the plugin if no safe version is confirmed.
- Restrict administrative and file-upload attack surface where operationally possible.
- Monitor web roots and uploads directories for unexpected executable files.
Validation and detection
- Confirm plugin slug is woocommerce-wholesale-lead-capture.
- Record installed version and compare against <= 2.0.3.1 exposure statement.
- Review vendor or Patchstack advisories for corrected affected-version and fix information.
- Check web server logs for unusual upload requests to plugin-related endpoints.
- Review file integrity monitoring for new or modified web-executable files.
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-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-27540 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
- Critical
- CVSS
- 9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H2.26Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9CriticalVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.