Skip to content
Fencer Vulns
high 7.5

CVE-2020-9321 json

Traefik has an Improper Certificate Handling issue

published 2020-03-16 6 y ago modified 2026-06-17 4 mo ago also GHSA-7h6j-2268-fhcm , GO-2022-0808 , EUVD-2021-2004

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/traefik/traefik 2.1.4
  • go github.com/containous/traefik/v2 2.1.4

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 5.3 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

Affected packages

ecosystem package affected fixed in
go github.com/traefik/traefik
<2.1.4
all versions
2.1.4
go github.com/containous/traefik
all versions
 no fix listed
go github.com/containous/traefik/v2
<2.1.4
2.1.4

Classification

Weakness
  • CWE-295 Improper Certificate Validation
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.