CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from cvelistv5 – Published: 2026-03-25 23:57 – Updated: 2026-03-26 18:10
VLAI
EPSS
VEX
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 18:09 UTC
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 | CPE status | |
|---|---|---|---|---|
| containers | crun |
Affected:
>= 1.19, < 1.27
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-30892",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-26T18:09:51.829145Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T18:10:16.318Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "crun",
"vendor": "containers",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.19, \u003c 1.27"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 0,
"baseSeverity": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "CWE-269: Improper Privilege Management",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-25T23:57:01.741Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj"
},
{
"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"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-30892",
"datePublished": "2026-03-25T23:57:01.741Z",
"dateReserved": "2026-03-06T00:04:56.701Z",
"dateUpdated": "2026-03-26T18:10:16.318Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-30892",
"date": "2026-09-21",
"epss": "0.00159",
"percentile": "0.05456"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "crun",
"vendor": "containers",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.19, \u003c 1.27"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:crun_project:crun:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BD451ABD-D466-4EB5-969D-E7D5844BDAA8",
"versionEndExcluding": "1.27",
"versionStartIncluding": "1.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "crun es un entorno de ejecuci\u00f3n de contenedores OCI de c\u00f3digo abierto escrito \u00edntegramente en C. En las versiones 1.19 a 1.26, la opci\u00f3n `-u` (`--user`) de `crun exec` se analiza de forma incorrecta. El valor `1` se interpreta como UID 0 y GID 0, cuando deber\u00eda haber sido UID 1 y GID 0. Por lo tanto, el proceso se ejecuta con privilegios m\u00e1s elevados de lo esperado. La versi\u00f3n 1.27 corrige el problema."
}
],
"id": "CVE-2026-30892",
"lastModified": "2026-06-17T10:33:06.190",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 0.0,
"baseSeverity": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.5,
"impactScore": 0.0,
"source": "security-advisories@github.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-30892",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-26T18:09:51.829145Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-26T00:16:38.953",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Patch"
],
"url": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01"
},
{
"source": "security-advisories@github.com",
"tags": [
"Product"
],
"url": "https://github.com/containers/crun/releases/tag/1.27"
},
{
"source": "security-advisories@github.com",
"tags": [
"Exploit",
"Vendor Advisory"
],
"url": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-269"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-01T12:00:47+00:00",
"cve": "CVE-2026-30892",
"id": "CVE-2026-30892",
"initial_release_date": "2026-03-25T23:57:01.741000+00:00",
"product_status:fixed": "86",
"product_status:known_affected": "1",
"product_status:known_not_affected": "3",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "crun: crun: Privilege escalation due to incorrect parsing of the `--user` option",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-30892.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-04-10T23:26:15Z",
"cve": "CVE-2026-30892",
"id": "CVE-2026-30892",
"initial_release_date": "2026-03-26T14:43:32Z",
"product_status:known_not_affected": "2",
"product_status:recommended": "2",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-30892",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-30892.json",
"version": "4"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-30892",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-26T18:09:51.829145Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-26T18:09:59.199Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "crun",
"vendor": "containers",
"versions": [
{
"status": "affected",
"version": "\u003e= 1.19, \u003c 1.27"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 0,
"baseSeverity": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "CWE-269: Improper Privilege Management",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-25T23:57:01.741Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj"
},
{
"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"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-30892",
"datePublished": "2026-03-25T23:57:01.741Z",
"dateReserved": "2026-03-06T00:04:56.701Z",
"dateUpdated": "2026-03-26T18:10:16.318Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…