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NVD / CVE Program· CNA GitHub_M

CVE-2026-57231: Podman: Malformed Image can trick podman run into leaking host environment variables into the container

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.43% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: podman-container-tools podman 5.8.4.

Low priority for now. Upgrade to podman-container-tools podman 5.8.4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jun 26, 2026
Updated
Oct 25, 2026
EPSS
0.4% · 37th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-57231

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
podman projectpodman

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • podman project podman1.8.1 and later · before 5.8.4
  • podman project podman6.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • podman-container-tools podman

    • >= 1.8.1, < 5.8.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8aardvark-dnsbefore 2:1.10.1-2.module_el8.10.0+4047+545787c42:1.10.1-2.module_el8.10.0+4047+545787c4
AlmaLinux:8aardvark-dnsbefore 2:1.10.1-2.module_el8.10.0+3901+4b80ecd72:1.10.1-2.module_el8.10.0+3901+4b80ecd7
AlmaLinux:8aardvark-dnsbefore 2:1.10.1-2.module_el8.10.0+4089+ce72bbbe2:1.10.1-2.module_el8.10.0+4089+ce72bbbe
AlmaLinux:8aardvark-dnsbefore 2:1.10.1-2.module_el8.10.0+3909+6e1c1eb72:1.10.1-2.module_el8.10.0+3909+6e1c1eb7
AlmaLinux:8buildahbefore 2:1.33.14-4.module_el8.10.0+4213+0493256b2:1.33.14-4.module_el8.10.0+4213+0493256b
AlmaLinux:8buildah-testsbefore 2:1.33.14-4.module_el8.10.0+4213+0493256b2:1.33.14-4.module_el8.10.0+4213+0493256b
AlmaLinux:8cockpit-podmanbefore 84.1-1.module_el8.10.0+4102+6c76e54484.1-1.module_el8.10.0+4102+6c76e544
AlmaLinux:8conmonbefore 3:2.1.10-1.module_el8.10.0+4068+0e21408f3:2.1.10-1.module_el8.10.0+4068+0e21408f
AlmaLinux:8conmonbefore 3:2.1.10-1.module_el8.10.0+4090+919323383:2.1.10-1.module_el8.10.0+4090+91932338
AlmaLinux:8conmonbefore 3:2.1.10-1.module_el8.10.0+3970+8445edf63:2.1.10-1.module_el8.10.0+3970+8445edf6
AlmaLinux:8container-selinuxbefore 2:2.229.0-3.module_el8.10.0+4213+0493256b2:2.229.0-3.module_el8.10.0+4213+0493256b
AlmaLinux:8containernetworking-pluginsbefore 1:1.4.0-8.module_el8.10.0+4136+164253431:1.4.0-8.module_el8.10.0+4136+16425343
AlmaLinux:8containers-commonbefore 2:1-82.module_el8.10.0+4089+ce72bbbe2:1-82.module_el8.10.0+4089+ce72bbbe
AlmaLinux:8containers-commonbefore 2:1-82.module_el8.10.0+3876+e55593a82:1-82.module_el8.10.0+3876+e55593a8
AlmaLinux:8containers-commonbefore 2:1-82.module_el8.10.0+3901+4b80ecd72:1-82.module_el8.10.0+3901+4b80ecd7
AlmaLinux:8critbefore 3.18-5.module_el8.10.0+4120+03ad4b473.18-5.module_el8.10.0+4120+03ad4b47
AlmaLinux:8critbefore 3.18-5.module_el8.10.0+3901+4b80ecd73.18-5.module_el8.10.0+3901+4b80ecd7
AlmaLinux:8critbefore 3.18-5.module_el8.10.0+4047+545787c43.18-5.module_el8.10.0+4047+545787c4
AlmaLinux:8critbefore 3.18-5.module_el8.10.0+3845+87b845523.18-5.module_el8.10.0+3845+87b84552
AlmaLinux:8criubefore 3.18-5.module_el8.10.0+4089+ce72bbbe3.18-5.module_el8.10.0+4089+ce72bbbe
AlmaLinux:8criubefore 3.18-5.module_el8.10.0+3909+6e1c1eb73.18-5.module_el8.10.0+3909+6e1c1eb7
AlmaLinux:8criubefore 3.18-5.module_el8.10.0+3876+e55593a83.18-5.module_el8.10.0+3876+e55593a8
AlmaLinux:8criubefore 3.18-5.module_el8.10.0+4120+03ad4b473.18-5.module_el8.10.0+4120+03ad4b47
AlmaLinux:8criu-develbefore 3.18-5.module_el8.10.0+3858+6ad51f9f3.18-5.module_el8.10.0+3858+6ad51f9f

+96

Same product

podman project: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-1227A privilege escalation flaw was found in Podman.
    36Monitor
  • CVE-2024-3056Podman: kernel: containers in shared ipc namespace are vulnerable to denial of service attack
    30Monitor
  • CVE-2022-27649A flaw was found in Podman, where containers were started incorrectly with non-empty default permissions.
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-0778Mar 27, 2023 · A Time-of-check Time-of-use (TOCTOU) flaw was found in podman.
    27Monitor
  • ← EarlierCVE-2026-33414Apr 14, 2026 · PowerShell Command Injection in Podman HyperV Machine
    16Monitor
  • ← EarlierCVE-2026-55686Jun 26, 2026 · Podman: WORKDIR symlink traversal vulnerability
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
podman-container-tools podman5.8.4 · descriptionVendor (CNA)
almalinux:aardvark-dns2:1.10.1-2.module_el8.10.0+3909+6e1c1eb7 · AlmaLinux:8Package registry (OSV)
almalinux:buildah2:1.33.14-4.module_el8.10.0+4213+0493256b · AlmaLinux:8Package registry (OSV)
almalinux:buildah-tests2:1.33.14-4.module_el8.10.0+4213+0493256b · AlmaLinux:8Package registry (OSV)
almalinux:cockpit-podman84.1-1.module_el8.10.0+4102+6c76e544 · AlmaLinux:8Package registry (OSV)
almalinux:conmon3:2.1.10-1.module_el8.10.0+3970+8445edf6 · AlmaLinux:8Package registry (OSV)
almalinux:container-selinux2:2.229.0-3.module_el8.10.0+4213+0493256b · AlmaLinux:8Package registry (OSV)
almalinux:containernetworking-plugins1:1.4.0-8.module_el8.10.0+4136+16425343 · AlmaLinux:8Package registry (OSV)
almalinux:podman6:5.8.2-4.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:podman-docker6:5.8.2-4.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:podman-plugins6:5.8.2-4.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:podman-remote6:5.8.2-4.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:podman-tests6:5.8.2-4.el9_8 · AlmaLinux:9Package registry (OSV)
debian:podman5.8.4+ds1-1 · Debian:14Package registry (OSV)
Go:github.com/containers/podman/v55.8.4Package registry (OSV)
Go:go.podman.io/podman/v66.0.0Package registry (OSV)
opensuse:podman6.0.2-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:aardvark-dns2:1.10.1-2.module+el8.10.0+24510+6ea3880e · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:buildah2:1.33.14-4.module+el8.10.0+24510+6ea3880e · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:podman0:6.0.0-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:podman-debuginfo7:5.8.2-4.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:podman-debugsource7:5.8.2-4.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:podman-docker0:6.0.0-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:podman-machine0:6.0.0-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:podman-plugins6:5.8.2-4.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:podman-plugins-debuginfo6:5.8.2-4.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:podman-remote0:6.0.0-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:podman-remote7:5.8.2-4.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:podman-remote-debuginfo7:5.8.2-4.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:podman-tests0:6.0.0-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)

+16

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-secondary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records