CVE-2026-15226 (GCVE-0-2026-15226)
Vulnerability from cvelistv5
Published
2026-07-21 14:02
Modified
2026-07-22 18:28
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-250 - Execution with unnecessary privileges
Summary
A sandbox confinement bypass vulnerability exists in Canonical snapd within its internal execution environment compiler (snap-confine). The default seccomp security templates generated by the engine to restrict system calls do not filter or reject process operations capable of creating or manipulating file execution flags with set-user-ID attributes. Consequently, an application running within a strictly confined snap environment can successfully compile or drop binaries and apply setuid properties to them. If a compromised or malicious process inside the snap sandbox executes these generated setuid binaries, it can potentially circumvent architectural sandboxing assumptions, drop intended restriction policies, or execute privileged actions inside the container namespace that should otherwise be strictly blocked. The vulnerability has been resolved by hardening the seccomp template engine to block the execution and creation of setuid executables by sandboxed snap processes.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-15226",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-22T18:15:09.916257Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T18:28:11.440Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/canonical",
"defaultStatus": "unaffected",
"packageName": "snapd",
"repo": "https://github.com/canonical/snapd/",
"versions": [
{
"lessThan": "2.76.1",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/resolute",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 26.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.76+ubuntu26.04.3",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/noble",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 24.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.76+ubuntu24.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/jammy",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 22.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.76+ubuntu22.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/focal",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 20.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.67.1+20.04ubuntu1~esm2",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/bionic",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 18.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.61.4ubuntu0.18.04.1+esm3",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/xenial",
"defaultStatus": "affected",
"packageName": "snapd",
"platforms": [
"Linux"
],
"product": "Ubuntu 16.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/snapd",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "2.61.4ubuntu0.16.04.1+esm3"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Zygmunt Krynicki"
}
],
"datePublic": "2026-07-21T14:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A sandbox confinement bypass vulnerability exists in Canonical snapd within its internal execution environment compiler (snap-confine). The default seccomp security templates generated by the engine to restrict system calls do not filter or reject process operations capable of creating or manipulating file execution flags with set-user-ID attributes. Consequently, an application running within a strictly confined snap environment can successfully compile or drop binaries and apply setuid properties to them. If a compromised or malicious process inside the snap sandbox executes these generated setuid binaries, it can potentially circumvent architectural sandboxing assumptions, drop intended restriction policies, or execute privileged actions inside the container namespace that should otherwise be strictly blocked. The vulnerability has been resolved by hardening the seccomp template engine to block the execution and creation of setuid executables by sandboxed snap processes."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-250",
"description": "CWE-250 Execution with unnecessary privileges",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-21T14:02:04.071Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"vdb-entry",
"issue-tracking"
],
"url": "https://ubuntu.com/security/CVE-2026-15226"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "snapd snap-confine Sandbox Confinement Bypass via Omission of setuid Restriction in Seccomp Templates"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-15226",
"datePublished": "2026-07-21T14:02:04.071Z",
"dateReserved": "2026-07-09T10:14:23.078Z",
"dateUpdated": "2026-07-22T18:28:11.440Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-15226\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-22T18:15:09.916257Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-22T18:15:10.586Z\"}}], \"cna\": {\"title\": \"snapd snap-confine Sandbox Confinement Bypass via Omission of setuid Restriction in Seccomp Templates\", \"source\": {\"discovery\": \"INTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Zygmunt Krynicki\"}], \"impacts\": [{\"capecId\": \"CAPEC-122\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-122 Privilege Abuse\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8.4, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/canonical/snapd/\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"2.76.1\", \"versionType\": \"semver\"}], \"packageName\": \"snapd\", \"collectionURL\": \"https://github.com/canonical\", \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 26.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu26.04.3\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/resolute\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 24.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu24.04.1\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/noble\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 22.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu22.04.1\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/jammy\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 20.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.67.1+20.04ubuntu1~esm2\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/focal\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 18.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.61.4ubuntu0.18.04.1+esm3\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/bionic\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 16.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.61.4ubuntu0.16.04.1+esm3\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/xenial\", \"defaultStatus\": \"affected\"}], \"datePublic\": \"2026-07-21T14:00:00.000Z\", \"references\": [{\"url\": \"https://ubuntu.com/security/CVE-2026-15226\", \"tags\": [\"vdb-entry\", \"issue-tracking\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A sandbox confinement bypass vulnerability exists in Canonical snapd within its internal execution environment compiler (snap-confine). The default seccomp security templates generated by the engine to restrict system calls do not filter or reject process operations capable of creating or manipulating file execution flags with set-user-ID attributes. Consequently, an application running within a strictly confined snap environment can successfully compile or drop binaries and apply setuid properties to them. If a compromised or malicious process inside the snap sandbox executes these generated setuid binaries, it can potentially circumvent architectural sandboxing assumptions, drop intended restriction policies, or execute privileged actions inside the container namespace that should otherwise be strictly blocked. The vulnerability has been resolved by hardening the seccomp template engine to block the execution and creation of setuid executables by sandboxed snap processes.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-250\", \"description\": \"CWE-250 Execution with unnecessary privileges\"}]}], \"providerMetadata\": {\"orgId\": \"cc1ad9ee-3454-478d-9317-d3e869d708bc\", \"shortName\": \"canonical\", \"dateUpdated\": \"2026-07-21T14:02:04.071Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-15226\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-22T18:28:11.440Z\", \"dateReserved\": \"2026-07-09T10:14:23.078Z\", \"assignerOrgId\": \"cc1ad9ee-3454-478d-9317-d3e869d708bc\", \"datePublished\": \"2026-07-21T14:02:04.071Z\", \"assignerShortName\": \"canonical\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…