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4 vulnerabilities found for crun by containers
CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from nvd – Published: 2026-03-25 23:57 – Updated: 2026-03-26 18:10
VLAI
Title
Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
Summary
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/1bd7f42… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.27 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
>= 1.19, < 1.27
|
{
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"id": "CVE-2026-30892",
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"timestamp": "2026-03-26T18:09:51.829145Z",
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"shortName": "CISA-ADP"
},
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}
],
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"vendor": "containers",
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],
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}
],
"metrics": [
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"attackVector": "LOCAL",
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"version": "3.1"
}
}
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],
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],
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},
{
"name": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01"
},
{
"name": "https://github.com/containers/crun/releases/tag/1.27",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/containers/crun/releases/tag/1.27"
}
],
"source": {
"advisory": "GHSA-4vg2-xjqj-7chj",
"discovery": "UNKNOWN"
},
"title": "Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation"
}
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}
CVE-2025-24965 (GCVE-0-2025-24965)
Vulnerability from nvd – Published: 2025-02-19 16:46 – Updated: 2025-02-19 16:56
VLAI
Title
.krun_config.json symlink attack creates or overwrites file on the host in crun
Summary
crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/0aec82c… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.20 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
< 1.20
|
{
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"timestamp": "2025-02-19T16:55:57.068827Z",
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}
],
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"vendor": "containers",
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}
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}
],
"metrics": [
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"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.5,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
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"vulnIntegrityImpact": "HIGH"
}
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"references": [
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}
],
"source": {
"advisory": "GHSA-f42g-r5jj-qh4j",
"discovery": "UNKNOWN"
},
"title": ".krun_config.json symlink attack creates or overwrites file on the host in crun"
}
},
"cveMetadata": {
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CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from cvelistv5 – Published: 2026-03-25 23:57 – Updated: 2026-03-26 18:10
VLAI
Title
Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
Summary
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/1bd7f42… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.27 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
>= 1.19, < 1.27
|
{
"containers": {
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{
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"id": "CVE-2026-30892",
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],
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"timestamp": "2026-03-26T18:09:51.829145Z",
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
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"product": "crun",
"vendor": "containers",
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}
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}
],
"metrics": [
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"attackVector": "LOCAL",
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"title": "Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation"
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CVE-2025-24965 (GCVE-0-2025-24965)
Vulnerability from cvelistv5 – Published: 2025-02-19 16:46 – Updated: 2025-02-19 16:56
VLAI
Title
.krun_config.json symlink attack creates or overwrites file on the host in crun
Summary
crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/0aec82c… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.20 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
< 1.20
|
{
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"vendor": "containers",
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}
],
"metrics": [
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"attackRequirements": "NONE",
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"baseScore": 8.5,
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"tags": [
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"x_refsource_MISC"
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],
"source": {
"advisory": "GHSA-f42g-r5jj-qh4j",
"discovery": "UNKNOWN"
},
"title": ".krun_config.json symlink attack creates or overwrites file on the host in crun"
}
},
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