Is CVE-2026-105850 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-105850 being exploited in the wild.

How severe is CVE-2026-105850?

High severity, with a CVSS score of 4, published 6 October 2026.

Which products and versions are affected?

@payloadcms/plugin-ecommerce (npm) SEMVER:introduced=0,fixed=3.90.0; PayloadCMS Plugin-Ecommerce = 4.0.0-canary.0 and < 4.0.0-canary.34.

How is CVE-2026-105850 attacked?

It is attacked over the network.

Am I affected by CVE-2026-105850?

Check whether you run @payloadcms/plugin-ecommerce (npm) or PayloadCMS Plugin-Ecommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-105850: Payload Ecommerce order confirmation validation issue in Stripe adapter

Q: Is there a fix for CVE-2026-105850?

Yes. @payloadcms/plugin-ecommerce (npm): upgrade to 3.90.0 or later. Until then: Ensure Stripe order confirmations can only be processed once by implementing idempotency checks until you upgrade to a patched version. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-105850 attacked?

It is attacked over the network.

Q: Am I affected by CVE-2026-105850?

Check whether you run @payloadcms/plugin-ecommerce (npm) or PayloadCMS Plugin-Ecommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-105850 · Severity: high · CVSS 4 · Published 2026-10-06

Payload Ecommerce is a plugin for the Payload CMS that manages online store orders and payments. When using the Stripe payment adapter, attackers can exploit a validation weakness to process the same order confirmation multiple times, potentially charging customers repeatedly or causing financial and operational disruption.

Vendors: npm, PayloadCMS.

Quick answers

Is CVE-2026-105850 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-105850 being exploited in the wild.
How severe is CVE-2026-105850?: High severity, with a CVSS score of 4, published 6 October 2026.
Which products and versions are affected?: @payloadcms/plugin-ecommerce (npm) SEMVER:introduced=0,fixed=3.90.0; PayloadCMS Plugin-Ecommerce < 3.90.0, >= 4.0.0-canary.0 and < 4.0.0-canary.34.
Is there a fix for CVE-2026-105850?: Yes. @payloadcms/plugin-ecommerce (npm): upgrade to 3.90.0 or later. Until then: Ensure Stripe order confirmations can only be processed once by implementing idempotency checks until you upgrade to a patched version. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-105850 attacked?: It is attacked over the network.
Am I affected by CVE-2026-105850?: Check whether you run @payloadcms/plugin-ecommerce (npm) or PayloadCMS Plugin-Ecommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

@payloadcms/plugin-ecommerce (npm): upgrade to 3.90.0 or later
```
npm install @payloadcms/plugin-ecommerce@3.90.0
```

Ensure Stripe order confirmations can only be processed once by implementing idempotency checks until you upgrade to a patched version.

Technical details

The vulnerability is an improper enforcement of single action (CWE-837) in the Stripe payment adapter's order confirmation handling. An attacker can send multiple confirmation requests over the network without authentication, causing the same order to be processed repeatedly due to insufficient idempotency validation. This results in duplicate charges and availability impact.

Affected products

PayloadCMS plugin-ecommerce < 3.90.0, >= 4.0.0-canary.0 and < 4.0.0-canary.34

Identifiers

CVE-2026-105850
GHSA-8r29-2mp2-pmrw

Timeline

2026-09-18: disclosed
2026-10-06: advisory

References

https://github.com/payloadcms/payload/security/advisories/GHSA-8r29-2mp2-pmrw

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