CVE-2026-115937
Unauthenticated payment reuse allows unpaid orders to be marked as paid
Description
The Mollie webhook endpoint accepts two independent, attacker-controlled parameters and never verifies that they belong together: * commerceTransactionHash — selects which Craft Commerce transaction is completed * id — selects which Mollie payment is queried for its status An unauthenticated attacker holding any paid Mollie payment ID from the merchant’s account can pair it with any transaction hash. Commerce queries Mollie, sees status: paid, and marks the target transaction successful for that transaction’s full amount, regardless of how much was actually paid.
INFO
Published Date :
Oct. 23, 2026, 10:16 p.m.
Last Modified :
Oct. 23, 2026, 10:16 p.m.
Remotely Exploit :
Yes !
Source :
7004884b-51e2-48e8-b4a2-5ca29e80453e
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e | ||||
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e | ||||
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e |
Solution
- Verify that the Mollie payment ID matches the transaction hash.
- Ensure the webhook endpoint validates both parameters together.
- Implement robust server-side checks for transaction integrity.
- Update the webhook endpoint logic to prevent mismatches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-115937.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-115937 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-115937
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-115937 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-115937 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 7004884b-51e2-48e8-b4a2-5ca29e80453e
Oct. 23, 2026
Action Type Old Value New Value Added Description The Mollie webhook endpoint accepts two independent, attacker-controlled parameters and never verifies that they belong together: * commerceTransactionHash — selects which Craft Commerce transaction is completed * id — selects which Mollie payment is queried for its status An unauthenticated attacker holding any paid Mollie payment ID from the merchant’s account can pair it with any transaction hash. Commerce queries Mollie, sees status: paid, and marks the target transaction successful for that transaction’s full amount, regardless of how much was actually paid. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Added CWE CWE-345 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/115xxx/CVE-2026-115937.json">CVE-2026-115937</a> Added Reference https://github.com/craftcms/commerce-mollie Added Reference https://github.com/craftcms/commerce-mollie/releases/tag/4.4.3 Added Reference https://github.com/craftcms/commerce-mollie/security/advisories/GHSA-3qcx-mjf6-48vj Added Reference https://www.hckrt.com/hacktivity/HCKRT-6RB2BC