CVE-2026-66655Network attack vector

Unauthenticated browser-context script execution

Published Aug 13, 2026 · Updated Aug 13, 2026

Reflected XSS in MultiParcels Shipping For WooCommerce 1.30.36 and earlier allows remote attackers to execute script via crafted requests. Patchstack has not published the vulnerable parameter, request path, or code locus that reflects unneutralized input into a generated page. Exploitation requires a victim to interact with attacker-supplied content, after which script runs in the victim's browser context.

CVSS severity7.1
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in MultiParcels Shipping For WooCommerce 1.30.36 and earlier allows remote attackers to execute script via crafted requests. Patchstack has not published the vulnerable parameter, request path, or code locus that reflects unneutralized input into a generated page. Exploitation requires a victim to interact with attacker-supplied content, after which script runs in the victim's browser context.

The record

CVE
CVE-2026-66655
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
MultiParcels
Product
MultiParcels Shipping For WooCommerce
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.30.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MultiParcels · MultiParcels Shipping For WooCommerceversion=n/a <=1.30.36

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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