Medium · CVSS 5.3CVE-2026-87837

Wava Payment 0.3.1 - 0.3.9 - Unauthenticated Order Status Change via Payment WebhookCVE-2026-87837

Answer in brief

CVE-2026-87837 records a Medium severity (CVSS 5.3) vulnerability in Wava Payment 0.3.1 - 0.3.9 - Unauthenticated Order Status Change via Payment Webhook. The current sources do not mark it as known exploited. The current feed maps Unknown/Wava Payment Plugin (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Wava Payment Plugin (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Wava Payment Plugingeneric	>=0.3.1 <0.3.10	0.3.10

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Wava Payment Plugin.
Review the reported fix. Update Unknown/Wava Payment Plugin to 0.3.10 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 21, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

The Wava Payment Plugin WordPress plugin before 0.3.10 does not verify the authenticity of incoming payment-provider notifications, nor restrict who may send them, allowing unauthenticated attackers to change the status of any WooCommerce order in the store, including marking an unpaid order as paid and completed, and cancelling other customers' orders. In versions up to 0.3.7 the response additionally returns the affected order's billing details, disclosing customer names, addresses, email addresses and phone numbers to the same unauthenticated caller.

Quoted source text, attributed separately from HOL analysis.