CVE-2026-31843
goodoneuz/pay-uz Unauthenticated PHP File Overwrite via /payment/api/editable/update Leading to Remote Code Execution
Description
The goodoneuz/pay-uz Laravel package (<= 2.2.24) contains a critical vulnerability in the /payment/api/editable/update endpoint that allows unauthenticated attackers to overwrite existing PHP payment hook files. The endpoint is exposed via Route::any() without authentication middleware, enabling remote access without credentials. User-controlled input is directly written into executable PHP files using file_put_contents(). These files are later executed via require() during normal payment processing workflows, resulting in remote code execution under default application behavior. The payment secret token mentioned by the vendor is unrelated to this endpoint and does not mitigate the vulnerability.
INFO
Published Date :
April 16, 2026, 1:16 p.m.
Last Modified :
June 17, 2026, 10:34 a.m.
Remotely Exploit :
Yes !
Source :
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Affected Products
The following products are affected by CVE-2026-31843
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | HIGH | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 3.1 | CRITICAL | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 4.0 | CRITICAL | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c |
Solution
- Update the goodoneuz/pay-uz Laravel package.
- Remove or restrict access to the affected endpoint.
- Implement proper authentication and input validation.
Public PoC/Exploit Available at Github
CVE-2026-31843 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2026-31843.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31843 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-2026-31843
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).
Large Scale Exploitation Campaign against CMS devices reported in July 2026
nuclei wordpress active-exploitation
The difference between exploitation prediction and detection is akin to the difference between detecting a missile launch or a detonation. Every avoided exploitation cycle saves hundreds of hours of engineering and infosec time.
Jupyter Notebook Python PowerShell
Для национальных платежных систем в Узбекистане
payment-gateway billing uzbekistan paymeuz paynet-uz clickuz laravel
PHP CSS JavaScript Blade
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31843 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31843 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.
-
CVE Modified by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/shaxzodbek-uzb/pay-uz/', 'vendor': 'goodoneuz', 'product': 'pay-uz', 'versions': [{'status': 'affected', 'version': '<= 2.2.24'}], 'packageName': 'goodoneuz/pay-uz', 'collectionURL': 'https://packagist.org/packages/goodoneuz/pay-uz', 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-31843', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-16T17:23:59.905688Z'} -
New CVE Received by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Apr. 16, 2026
Action Type Old Value New Value Added Description The goodoneuz/pay-uz Laravel package (<= 2.2.24) contains a critical vulnerability in the /payment/api/editable/update endpoint that allows unauthenticated attackers to overwrite existing PHP payment hook files. The endpoint is exposed via Route::any() without authentication middleware, enabling remote access without credentials. User-controlled input is directly written into executable PHP files using file_put_contents(). These files are later executed via require() during normal payment processing workflows, resulting in remote code execution under default application behavior. The payment secret token mentioned by the vendor is unrelated to this endpoint and does not mitigate the vulnerability. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CWE CWE-284 Added Reference https://github.com/goodoneuz/pay-uz/blob/master/src/Http/Controllers/ApiController.php Added Reference https://github.com/goodoneuz/pay-uz/blob/master/src/routes/web.php Added Reference https://github.com/shaxzodbek-uzb/pay-uz Added Reference https://packagist.org/packages/goodoneuz/pay-uz