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CVE-2026-93836

📛 CVE Title

WPC Product Bundles for WooCommerce <= 8.6.6 - Unauthenticated Stored Cross-Site Scripting via 'qty' Parameter

Description

The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and including, 8.6.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The float cast used during quantity validation allows a numeric-prefixed payload such as '1<img src=x onerror=...>' to pass validation while retaining its malicious HTML, which is then stored verbatim in order item metadata under the '_woosb_ids' key.

Overview

State
PUBLISHED
Assigner (CNA)
Wordfence
CVSS severity
HIGH
CVSS score
CVSS 7.2 / 10 7.2 7.2 / 10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Effective score
7.2 / 10 HIGH source: CNA overview
CWE(s)
CWE-79
Reserved
2026-09-18
Published
2026-09-22 07:41 UTC
Last updated
2026-09-22 10:25 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/93xxx/CVE-2026-93836.json
Linked Threat
CVE-2026-93836 — WPC Product Bundles for WooCommerce <= 8.6.6 - Unauthenticated Stored Cross-Site Scripting via 'qty' Parameter

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-09-22 08:16:42 UTC
NVD last modified
2026-09-22 19:04:55 UTC
NVD CVSS v3.1
CVSS 7.2 / 10 7.2 7.2 / 10 HIGH source: security@wordfence.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Exploitability subscore
3.9 / 10
Impact subscore
2.7 / 10
EPSS score
0.0023 (probability of exploitation in next 30 days)
EPSS percentile
14.04% vs all CVEs — higher = more likely to be exploited, as of 2026-09-22

NVD / KEV / EPSS data refreshed 2026-09-23 02:32 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-84310
Assigner
Wordfence
Published
Sep 22, 2026, 7:41:16 AM
Updated
Sep 22, 2026, 10:25:31 AM
EUVD base score (CVSS 3.1)
7.2 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EUVD-reported EPSS
0.2300
Vendors
WPClever
Products
WPC Product Bundles for WooCommerce (0 ≤8.6.6)
Aliases
GHSA-m435-6crg-xq92

ENISA description: The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and including, 8.6.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The float cast used during quantity validation allows a numeric-prefixed payload such as '1<img src=x onerror=...>' to pass validation while retaining its malicious HTML, which is then stored verbatim in order item metadata under the '_woosb_ids' key.

EUVD references (6)

Affected products (1)

VendorProductVersionsPlatforms
wpclever WPC Product Bundles for WooCommerce 0 (affected) —

Vendor references (6)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Indicators (1)

IOCs linked to the auto-promoted Threat row.

TypeValueVirusTotalAttached
cve CVE-2026-93836 no local data 2026-09-22 02:56 UTC

Flagged vendors

    Remediations (1)

    Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

    • Wordfence remediation: WPC Product Bundles for WooCommerce
      Wordfence

      Update to version 8.6.7, or a newer patched version

      2026-09-22 02:56 UTC

    AI Forensic Analysis

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    Raw JSON

    The full cvelistV5 record. Download as CVE-2026-93836.json.

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-93836",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-09-22T10:07:54.238433Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-09-22T10:25:31.065Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
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              "defaultStatus": "unaffected",
              "product": "WPC Product Bundles for WooCommerce",
              "vendor": "wpclever",
              "versions": [
                {
                  "lessThanOrEqual": "8.6.6",
                  "status": "affected",
                  "version": "0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "lhking"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and including, 8.6.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The float cast used during quantity validation allows a numeric-prefixed payload such as '1<img src=x onerror=...>' to pass validation while retaining its malicious HTML, which is then stored verbatim in order item metadata under the '_woosb_ids' key."
            }
          ],
          "metrics": [
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                "baseSeverity": "HIGH",
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                "version": "3.1"
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          ],
          "problemTypes": [
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              "descriptions": [
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                  "cweId": "CWE-79",
                  "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
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          "providerMetadata": {
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            "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
            "shortName": "Wordfence"
          },
          "references": [
            {
              "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/fc620054-00ed-4c2e-9448-b40ae28efff3?source=cve"
            },
            {
              "url": "https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-backend.php#L1949"
            },
            {
              "url": "https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L1197"
            },
            {
              "url": "https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L584"
            },
            {
              "url": "https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L579"
            },
            {
              "url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3702892%40woo-product-bundle&new=3702892%40woo-product-bundle"
            }
          ],
          "timeline": [
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              "lang": "en",
              "time": "2026-09-18T18:30:49.000Z",
              "value": "Vendor Notified"
            },
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              "time": "2026-09-21T18:54:09.000Z",
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            }
          ],
          "title": "WPC Product Bundles for WooCommerce <= 8.6.6 - Unauthenticated Stored Cross-Site Scripting via 'qty' Parameter"
        }
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        "dateReserved": "2026-09-18T18:15:43.949Z",
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        "state": "PUBLISHED"
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    }