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CVE-2021-20199

MEDIUM
5.9
CVSS Score
Published: February 2, 2021 at 06:12 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
1 product affected across 1 vendorPodman

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Severity
MEDIUM5.9
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Podman· Podman
95%
1.8.0 ≤ v < 3.0.0podman 1.8.0 onwards
Affected range stops below 3.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1919050
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/containers/podman/issues/5138
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/containers/podman/pull/9052
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/rootless-containers/rootlesskit/pull/206

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-346

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