CVE-2021-41230

Name: CVE-2021-41230
Creator: NVD / NIST
Published: 2021-11-05T23:15:08.727+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.83%

Last modified Jun 17, 2026

CVE-2021-41230 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Pomerium is an open source identity-aware access proxy. In affected versions changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using `allowed_idp_claims` as part of policy. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

Description

Pomerium is an open source identity-aware access proxy. In affected versions changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using `allowed_idp_claims` as part of policy. If using `allowed_idp_claims` and a user's claims are changed, Pomerium can make incorrect authorization decisions. This issue has been resolved in v0.15.6. For users unable to upgrade clear data on `databroker` service by clearing redis or restarting the in-memory databroker to force claims to be updated.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.83%

52.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Pomerium	Pomerium	>= 0.14.0, < 0.15.6

References

https://github.com/pomerium/pomerium/pull/2724Patch, Third Party Advisory
https://github.com/pomerium/pomerium/security/advisories/GHSA-j6wp-3859-vxfgThird Party Advisory
https://github.com/pomerium/pomerium/pull/2724Patch, Third Party Advisory
https://github.com/pomerium/pomerium/security/advisories/GHSA-j6wp-3859-vxfgThird Party Advisory

Timeline

Published: Nov 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41230?

How severe is CVE-2021-41230?

CVE-2021-41230 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41230?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41230?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST