CVE-2021-29652
pomerium_signature is not verified in middleware in github.com/pomerium/pomerium
Pomerium from version 0.10.0-0.13.3 has an Open Redirect in the user sign-in/out process
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Pomerium from version 0.10.0-0.13.3 has an Open Redirect in the user sign-in/out process
- Record
CVE-2021-29652- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
CVE List No score
Pomerium from version 0.10.0-0.13.3 has an Open Redirect in the user sign-in/out process
- Record
CVE-2021-29652- Updated
- 2026-11-02
EUVDEUVD-2021-1066 No score
Pomerium from version 0.10.0-0.13.3 has an Open Redirect in the user sign-in/out process
- Record
EUVD-2021-1066- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fv82-r8qv-ch4v
pomerium_signature is not verified in middleware in github.com/pomerium/pomerium
Impact
Some API endpoints under /.pomerium/ do not verify parameters with pomerium_signature. This could allow modifying parameters intended to be trusted to Pomerium.
The issue mainly affects routes responsible for sign in/out, but does not introduce an authentication bypass.
Specific Go Packages Affected
github.com/pomerium/pomerium/authenticate
Patches
Patched in v0.13.4
For more information
If you have any questions or comments about this advisory
- Open an issue in pomerium
- Email us at [email protected]
- Record
GHSA-fv82-r8qv-ch4v- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSV
Pomerium from version 0.10.0-0.13.3 has an Open Redirect in the user sign-in/out process
- Record
CVE-2021-29652- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-fv82-r8qv-ch4v
pomerium_signature is not verified in middleware in github.com/pomerium/pomerium
Impact
Some API endpoints under /.pomerium/ do not verify parameters with pomerium_signature. This could allow modifying parameters intended to be trusted to Pomerium.
The issue mainly affects routes responsible for sign in/out, but does not introduce an authentication bypass.
Specific Go Packages Affected
github.com/pomerium/pomerium/authenticate
Patches
Patched in v0.13.4
For more information
If you have any questions or comments about this advisory
- Open an issue in pomerium
- Email us at [email protected]
- Record
GHSA-fv82-r8qv-ch4v- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVGO-2022-0827 No score
pomerium_signature is not verified in middleware in github.com/pomerium/pomerium
pomerium_signature is not verified in middleware in github.com/pomerium/pomerium
- Record
GO-2022-0827- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/pomerium/pomeriumGo |
0.10.0 up to 0.13.4 | 0.13.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29652 is a medium vulnerability (CVSS 6.1) in Pomerium, published April 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 51st percentile. Fixed in github.com/pomerium/pomerium 0.13.4.