CVE-2020-9321
Traefik has an Improper Certificate Handling issue
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 55th percentile. Fixed in github.com/traefik/traefik 2.1.4.
- Severity
- 7.5 HighCVSS 3.1, NVD
- Exploit chance
- 0.74%EPSS, 55th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.1.4github.com/traefik/traefik +3 more
Description
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
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 |
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 ListNo 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-2021-2004No 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-2022-0808No 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
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.