Invoice123 <= 1.7.0 - Missing Authorization to Authenticated (Subscriber+) Setting Modification via s123_submit_api_key & s123_submit_invoice_settings AJAX actions
Summary
| CVE | CVE-2026-9857 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-10 10:16:24 UTC |
| Updated | 2026-07-10 15:43:30 UTC |
| Description | The Invoice123 plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the plugin's API key stored in wp_options, modify invoice plugin settings, and alter WooCommerce tax rate data in the wp_woocommerce_tax_rates table. |
Risk And Classification
Primary CVSS: v3.1 4.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.002880000 probability, percentile 0.206380000 (date 2026-07-13)
Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | DECLARED | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Saskaita123 | Invoice123 | affected 1.7.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/7d4e685a-0462-447f-a639-4f95d... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pages/S123_ApiKey.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pages/S123_ApiKey.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pages/S123_Invoice... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.7.0/includes/pages/S123_ApiKey.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/saskaita123-lt/tags/1.6.8/includes/pages/S123_ApiKey.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Benedictus Jovan (aillesiM) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-07-09T20:50:27.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.