CVE-2026-10524Network attack vector

Unauthenticated price manipulation via unchecked cart parameter

Published Aug 6, 2026 · Updated Aug 6, 2026

Improper input validation in CoCart before 4.9.0 allows remote attackers to complete WooCommerce orders at manipulated totals. The cocart/v2/cart/add-item endpoint passes a caller-supplied price to CoCart_Cart_Cache::set_new_price() because does_product_allow_price_change() defaults to true. No authentication is required; a reachable public REST endpoint and a valid product identifier are sufficient to underprice items in a guest cart and carry the altered total into checkout.

CVSS severity7.5
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in CoCart before 4.9.0 allows remote attackers to complete WooCommerce orders at manipulated totals. The cocart/v2/cart/add-item endpoint passes a caller-supplied price to CoCart_Cart_Cache::set_new_price() because does_product_allow_price_change() defaults to true. No authentication is required; a reachable public REST endpoint and a valid product identifier are sufficient to underprice items in a guest cart and carry the altered total into checkout.

The record

CVE
CVE-2026-10524
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
CoCart Headless, LLC
Product
CoCart
Classifications
CWE-472, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=0 <4.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CoCart Headless, LLC · CoCartversion=0 <4.9.0

Published CVSS scores

7.5WPScanCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-472External Control of Assumed-Immutable Web Parameter
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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