CVE-2026-31843: goodoneuz/pay-uz The /payment/api/editable/update Endpoint Overwrites Existing Vulnerability

CRITICAL
Advisory Identifier: GHSA-m5wg-cjgh-223j
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CVSS 9.8
CWE-284
Published
Advisory Summary

CVE-2026-31843 is a CRITICAL (CVSS 9.8) the /payment/api/editable/update endpoint overwrites existing vulnerability (CWE-284: Improper Access Control) affecting goodoneuz/pay-uz libraries in the Packagist ecosystem. The issue involves the /payment/api/editable/update endpoint overwrites existing php payment hook files. Remediation is available by upgrading affected packages to version 3.0.0.

CVE-2026-31843 at a Glance

CVE Identifier CVE-2026-31843
GHSA Identifier GHSA-m5wg-cjgh-223j
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-284: Improper Access Control
Affected Product goodoneuz/pay-uz
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-31843

To remediate this vulnerability, upgrade all affected goodoneuz/pay-uz dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

goodoneuz/pay-uz fixed: 3.0.0 
Upgrade goodoneuz/pay-uz to 3.0.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for goodoneuz/pay-uz

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-31843, inspect your project dependencies for goodoneuz/pay-uz:

inspect dependencies for goodoneuz/pay-uz

Analyze the terminal output to locate any version of goodoneuz/pay-uz in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In goodoneuz/pay-uz, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-31843 Affected goodoneuz/pay-uz Versions

1 component(s)
Fixed Versions:
3.0.0
Product / Package Ecosystem Affected Versions Fixed Version
goodoneuz/pay-uz
 Packagist
< 3.0.0
3.0.0

References

NVD — CVE-2026-31843 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31843
goodoneuz/pay-uz Source Repository REPOSITORY
https://github.com/shaxzodbek-uzb/pay-uz/pull/73
goodoneuz/pay-uz Source Repository REPOSITORY
https://github.com/goodoneuz/pay-uz/blob/master/src/Http/Controllers/ApiController.php
goodoneuz/pay-uz Source Repository REPOSITORY
https://github.com/goodoneuz/pay-uz/blob/master/src/routes/web.php
goodoneuz/pay-uz Source Repository REPOSITORY
https://github.com/shaxzodbek-uzb/pay-uz
goodoneuz/pay-uz Release RELEASE
https://github.com/shaxzodbek-uzb/pay-uz/releases/tag/3.0.0
packagist.org/packages/goodoneuz/... WEB
https://packagist.org/packages/goodoneuz/pay-uz

Frequently Asked Questions

What is CVE-2026-31843?
CVE-2026-31843 is a security vulnerability in goodoneuz/pay-uz involving the /payment/api/editable/update endpoint overwrites existing PHP payment hook files under CWE-284: Improper Access Control.
Which goodoneuz/pay-uz versions are affected?
Affected versions include releases prior to 3.0.0 across affected packages: goodoneuz/pay-uz.
What version fixes CVE-2026-31843?
Upgrading to 3.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is goodoneuz/pay-uz affected?
Yes, goodoneuz/pay-uz is affected in releases prior to 3.0.0. Upgrade your dependency to 3.0.0 or later.
What is the CVSS score of CVE-2026-31843?
CVE-2026-31843 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-31843?
CVE-2026-31843 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2026-31843?
Run the dependency tree command: 'inspect dependencies for goodoneuz/pay-uz'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m5wg-cjgh-223j",
  "modified" : "2026-07-27T15:07:24Z",
  "published" : "2026-04-16T15:31:32Z",
  "aliases" : [ "CVE-2026-31843" ],
  "summary" : "goodoneuz/pay-uz: the /payment/api/editable/update endpoint overwrites existing PHP payment hook files",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "goodoneuz/pay-uz"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.2.24"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31843"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shaxzodbek-uzb/pay-uz/pull/73"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/goodoneuz/pay-uz/blob/master/src/Http/Controllers/ApiController.php"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/goodoneuz/pay-uz/blob/master/src/routes/web.php"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/shaxzodbek-uzb/pay-uz"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/shaxzodbek-uzb/pay-uz/releases/tag/3.0.0"
  }, {
    "type" : "WEB",
    "url" : "https://packagist.org/packages/goodoneuz/pay-uz"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-16T22:58:58Z",
    "nvd_published_at" : "2026-04-16T13:16:48Z"
  }
}