CVE-2020-9321
Traefik has an Improper Certificate Handling issue
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
CVE-2020-9321- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
CVE-2020-9321- Updated
- 2026-11-02
EUVDEUVD-2021-2004 No score
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
EUVD-2021-2004- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7h6j-2268-fhcm
Traefik has an Improper Certificate Handling issue
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
GHSA-7h6j-2268-fhcm- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-200, CWE-295
- Updated
- 2026-11-02
OSV
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
CVE-2020-9321- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-7h6j-2268-fhcm
Traefik has an Improper Certificate Handling issue
configurationwatcher.go in Traefik 2.x before 2.1.4 and TraefikEE 2.0.0 mishandles the purging of certificate contents from providers before logging.
- Record
GHSA-7h6j-2268-fhcm- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-200, CWE-295
- Updated
- 2026-11-02
OSVGO-2022-0808 No score
Improper Certificate Handling in github.com/containous/traefik
Improper Certificate Handling in github.com/containous/traefik
- Record
GO-2022-0808- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/traefik/traefikGo |
before 2.1.4 | 2.1.4 |
github.com/containous/traefikGo |
All versions | None known |
github.com/containous/traefik/v2Go |
before 2.1.4 | 2.1.4 |
github.com/traefik/traefikGo |
All versions | None known |
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-2020-9321 is a high vulnerability (CVSS 7.5) in Traefik, published March 16, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 54th percentile. Fixed in github.com/traefik/traefik 2.1.4.