CVE-2021-20199Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts…
- 5.9MediumCVSS base score
- 1.1%Exploitation in 30 daysEPSS · top 34% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.
Timeline
ID reserved
By redhat
- 47 days later
· 47 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.1% · top 34% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
podman
- affected podman 1.8.0 onwards
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/containers/podman/v3GHSA-grh6-q6m2-rh72 (opens in a new tab)
References
References4
- https://bugzilla.redhat.com/show_bug.cgi?id=1919050 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/containers/podman/issues/5138 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/rootless-containers/rootlesskit/pull/206 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/containers/podman/pull/9052 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-1086 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-grh6-q6m2-rh72 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-20199)Record last updated .