Vulnerability report

Active exploitation observed Confirmed confidence Not in CISA KEV

CVE-2026-27540

Woocommerce Wholesale Lead Capture Arbitrary File Access

Rymera Web / Woocommerce Wholesale Lead Capture · 0 to <= 2.0.3.1

Watch CVE-2026-27540 Browse KEV feed
Severity
CVSS 9.0 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
1.6%
First observed
29 Sep 2026
Last observed
06 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-27540 is an unauthenticated vulnerability affecting Rymera Web Woocommerce Wholesale Lead Capture. Unrestricted Upload of File with Dangerous Type vulnerability in Rymera Web Co Pty Ltd. Woocommerce Wholesale...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Also confirmed by third-party sources.

Who is affected?

Rymera Web / Woocommerce Wholesale Lead Capture 0 to <= 2.0.3.1.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Unrestricted Upload of File with Dangerous Type vulnerability in Rymera Web Co Pty Ltd

Unrestricted Upload of File with Dangerous Type vulnerability in Rymera Web Co Pty Ltd.

Woocommerce Wholesale Lead Capture woocommerce-wholesale-lead-capture allows Using Malicious Files.This issue affects Woocommerce Wholesale Lead Capture: from n/a through <= 2.0.3.1.

Rymera Web Co Pty Ltd. Affected
Woocommerce Wholesale Lead Capture woocommerce-wholesale-lead-capture
Through 2.0.3.1
Published
19 Mar 2026
Exploitation Reported
14 Sep 2026
Attack vector
Remote
Complexity
High
Privileges
None
User interaction
None

Tags

wordpress

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-27540
  • VDB Entry — patchstack.com patchstack.com · VDB Entry https://patchstack.com/database/Wordpress/Plugin/woocommerce-wholesal...

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Wordfence

Recorded 14 Sep 2026

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 29 Sep 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Proof of concept available

GitHub

Recorded 17 Sep 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
Wordfence First 2026-09-14 18:49 UTC
SOCRadar 2026-09-16 11:49 UTC
Previdian Sensors 2026-09-30 12:06 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

50

Attempts observed

22

Unique attacker IPs

4

Attacker countries

BG · LT · NL · US

13

Sensors observed

CVE-2026-27540 exploitation attempts over the last 13 days

Daily events observed by Previdian sensors

Updated 10 Oct 2026

0
4
6
7
16
5
4
6
2
0
0
0
0
28 Sep 1 Oct 4 Oct 7 Oct 10 Oct

First observed 29 Sep 2026 · Last observed 06 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
1
23
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.0 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

1.6%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Unrestricted Upload of File with Dangerous Type CWE-434

Recent mention · SOCRadar

CVE-2026-27540 WooCommerce Flaw Exploited

CVE-2026-27540 WooCommerce Flaw Exploited Attackers are actively exploiting CVE-2026-27540 , a critical arbitrary file-upload vulnerability in the WooCommerce Wholesale Lead Capture plugin for WordPress. The flaw allows

Read full advisory

All Mentions

Recent mention · SOCRadar

CVE-2026-27540 WooCommerce Flaw Exploited

SOCRadar · 16 Sep 2026

CVE-2026-27540 WooCommerce Flaw Exploited Attackers are actively exploiting CVE-2026-27540 , a critical arbitrary file-upload vulnerability in the WooCommerce Wholesale Lead Capture plugin for WordPress. The flaw allows

Recent mention · The Hacker News

Attackers Exploit WooCommerce Wholesale Lead Capture Flaw to Plant PHP Web Shells

The Hacker News · 16 Sep 2026

Threat actors are exploiting a critical security flaw in WooCommerce Wholesale Lead Capture, a premium WordPress plugin that has more than 6,000 active installs. "This vulnerability can be leveraged by unauthenticated attackers to upload arbitrary files, including PHP backdoors, and achieve remote code execution," Wordfence said. The WordPress security company said it has blocked over

Recent mention · Wordfence

Attackers Actively Exploiting Critical Vulnerability in WooCommerce Wholesale Lead Capture Plugin

Wordfence · 14 Sep 2026

On February 20th, 2026, a critical Unauthenticated Arbitrary File Upload vulnerability was publicly disclosed in WooCommerce Wholesale Lead Capture, a premium WordPress plugin with an estimated 6,000 active installations. This vulnerability can be leveraged by unauthenticated attackers to upload arbitrary files, including PHP backdoors, and achieve remote code execution. The post Attackers Actively Exploiting Critical Vulnerability in WooCommerce Wholesale Lead Capture Plugin appeared first on Wordfence.

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

winrarzipsexploit/CVE-2026-27540

github · Created 2026-09-17 18:44:20 UTC · 0 stars · AI assessment 90%

CVE-2026-27540 WWLC WordPress unauth upload RCE suite — authorized testing only

Timeline

From disclosure to observed exploitation

  1. 07:59 UTC

    Indicators of compromise added (22)

    Indicators of compromise recorded

  2. 07:59 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  3. 18:44 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 11:49 UTC

    KEV confirmed by SOCRadar

    Exploitation attested by an external source

  5. 18:49 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  6. 05:24 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 11:18 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-27540

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-27540",
  "confidence": "Confirmed",
  "cvss_score": 9.0,
  "cvss_estimated": false,
  "epss_score": 0.01567,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 50, "sensors": 13 }
}