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2 vulnerabilities found for Gitea Runner by Gitea
CVE-2026-73802 (GCVE-0-2026-73802)
Vulnerability from nvd – Published: 2026-10-14 14:37 – Updated: 2026-10-18 13:34
VLAI
EPSS
VEX
Title
Gitea Runner host isolation bypass through container options
Summary
Gitea Runner passes workflow-controlled container options into Docker job container configuration while privileged mode is disabled. Host namespace settings, expanded capabilities, and security profile overrides can remain effective despite Privileged being forced false. A workflow author able to run jobs on an affected Docker-backed runner can use these options to access host namespaces and execute commands as root on the runner host, bypassing the intended container isolation.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 13:34 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://blog.gitea.com/release-of-runner-3.0.0/ | release-notes |
| https://gitea.com/gitea/runner/releases/tag/v3.0.0 | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Runner |
Affected:
0 , < 3.0.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-73802",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-18T13:34:45.738812Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-18T13:34:49.826Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "gitea.com/gitea/runner",
"product": "Gitea Runner",
"vendor": "Gitea",
"versions": [
{
"lessThan": "3.0.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "https://github.com/sn0x-sharma"
}
],
"descriptions": [
{
"lang": "en",
"value": "Gitea Runner passes workflow-controlled container options into Docker job container configuration while privileged mode is disabled. Host namespace settings, expanded capabilities, and security profile overrides can remain effective despite Privileged being forced false. A workflow author able to run jobs on an affected Docker-backed runner can use these options to access host namespaces and execute commands as root on the runner host, bypassing the intended container isolation."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "CWE-269: Improper Privilege Management",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-14T14:37:55.141Z",
"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"shortName": "Gitea"
},
"references": [
{
"name": "GitHub Security Advisory GHSA-x4q3-gcj3-m6cf",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-x4q3-gcj3-m6cf"
},
{
"name": "Gitea Runner 3.0.0 release announcement",
"tags": [
"release-notes"
],
"url": "https://blog.gitea.com/release-of-runner-3.0.0/"
},
{
"name": "gitea/runner v3.0.0 release",
"tags": [
"release-notes"
],
"url": "https://gitea.com/gitea/runner/releases/tag/v3.0.0"
}
],
"title": "Gitea Runner host isolation bypass through container options"
}
},
"cveMetadata": {
"assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"assignerShortName": "Gitea",
"cveId": "CVE-2026-73802",
"datePublished": "2026-10-14T14:37:55.141Z",
"dateReserved": "2026-08-13T16:50:59.169Z",
"dateUpdated": "2026-10-18T13:34:49.826Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-73802 (GCVE-0-2026-73802)
Vulnerability from cvelistv5 – Published: 2026-10-14 14:37 – Updated: 2026-10-18 13:34
VLAI
EPSS
VEX
Title
Gitea Runner host isolation bypass through container options
Summary
Gitea Runner passes workflow-controlled container options into Docker job container configuration while privileged mode is disabled. Host namespace settings, expanded capabilities, and security profile overrides can remain effective despite Privileged being forced false. A workflow author able to run jobs on an affected Docker-backed runner can use these options to access host namespaces and execute commands as root on the runner host, bypassing the intended container isolation.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 13:34 UTC
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://blog.gitea.com/release-of-runner-3.0.0/ | release-notes |
| https://gitea.com/gitea/runner/releases/tag/v3.0.0 | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Runner |
Affected:
0 , < 3.0.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-73802",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-18T13:34:45.738812Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-18T13:34:49.826Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "gitea.com/gitea/runner",
"product": "Gitea Runner",
"vendor": "Gitea",
"versions": [
{
"lessThan": "3.0.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "https://github.com/sn0x-sharma"
}
],
"descriptions": [
{
"lang": "en",
"value": "Gitea Runner passes workflow-controlled container options into Docker job container configuration while privileged mode is disabled. Host namespace settings, expanded capabilities, and security profile overrides can remain effective despite Privileged being forced false. A workflow author able to run jobs on an affected Docker-backed runner can use these options to access host namespaces and execute commands as root on the runner host, bypassing the intended container isolation."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-269",
"description": "CWE-269: Improper Privilege Management",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-14T14:37:55.141Z",
"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"shortName": "Gitea"
},
"references": [
{
"name": "GitHub Security Advisory GHSA-x4q3-gcj3-m6cf",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-x4q3-gcj3-m6cf"
},
{
"name": "Gitea Runner 3.0.0 release announcement",
"tags": [
"release-notes"
],
"url": "https://blog.gitea.com/release-of-runner-3.0.0/"
},
{
"name": "gitea/runner v3.0.0 release",
"tags": [
"release-notes"
],
"url": "https://gitea.com/gitea/runner/releases/tag/v3.0.0"
}
],
"title": "Gitea Runner host isolation bypass through container options"
}
},
"cveMetadata": {
"assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"assignerShortName": "Gitea",
"cveId": "CVE-2026-73802",
"datePublished": "2026-10-14T14:37:55.141Z",
"dateReserved": "2026-08-13T16:50:59.169Z",
"dateUpdated": "2026-10-18T13:34:49.826Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}