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2 vulnerabilities found for Flow Payment by Flow
CVE-2026-57857 (GCVE-0-2026-57857)
Vulnerability from nvd – Published: 2026-07-18 20:33 – Updated: 2026-07-20 17:45
VLAI
EPSS
VEX
Title
Flow Payment Plugin for WordPress Reflected Cross-Site Scripting via error_message Parameter
Summary
The Flow Payment plugin for WordPress (flow.cl) version 3.0.8 is vulnerable to reflected cross-site scripting on the WooCommerce checkout page. When the plugin handles an order cancellation, the error_message GET parameter is passed directly to wc_add_notice() in flowpayment-fl.php (lines 57-58) without input sanitization (for example sanitize_text_field()) or output escaping (for example esc_html()) before being rendered in the checkout notice HTML. An unauthenticated attacker can craft a URL containing a JavaScript payload in the error_message parameter (for example /checkout/?add-to-cart={product-id}&cancel_order=true&error_message={payload}); when a victim with an active WooCommerce checkout session follows the link, the payload executes in the victim's browser in the origin of the WordPress site.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.flow.cl/ | product |
| https://www.vulncheck.com/advisories/flow-payment… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Flow | Flow Payment |
Affected:
0 , ≤ 3.0.8
(semver)
Unaffected: 3.0.9 (semver) |
Date Public
2026-07-18 00:00
Credits
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CVE-2026-57857 (GCVE-0-2026-57857)
Vulnerability from cvelistv5 – Published: 2026-07-18 20:33 – Updated: 2026-07-20 17:45
VLAI
EPSS
VEX
Title
Flow Payment Plugin for WordPress Reflected Cross-Site Scripting via error_message Parameter
Summary
The Flow Payment plugin for WordPress (flow.cl) version 3.0.8 is vulnerable to reflected cross-site scripting on the WooCommerce checkout page. When the plugin handles an order cancellation, the error_message GET parameter is passed directly to wc_add_notice() in flowpayment-fl.php (lines 57-58) without input sanitization (for example sanitize_text_field()) or output escaping (for example esc_html()) before being rendered in the checkout notice HTML. An unauthenticated attacker can craft a URL containing a JavaScript payload in the error_message parameter (for example /checkout/?add-to-cart={product-id}&cancel_order=true&error_message={payload}); when a victim with an active WooCommerce checkout session follows the link, the payload executes in the victim's browser in the origin of the WordPress site.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.flow.cl/ | product |
| https://www.vulncheck.com/advisories/flow-payment… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Flow | Flow Payment |
Affected:
0 , ≤ 3.0.8
(semver)
Unaffected: 3.0.9 (semver) |
Date Public
2026-07-18 00:00
Credits
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