CVE-2026-73802— Gitea Runner host isolation bypass through container options
Quick assessment
Affected
Gitea Gitea Runner
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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 fo
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Gitea | Gitea Runner | < 3.0.0 |
affected |
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I. Basic Information for CVE-2026-73802
Vulnerability Information
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Vulnerability Title
Gitea Runner host isolation bypass through container options
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Gitea | Gitea Runner | 0 ~ 3.0.0 | - |
|
II. Public POCs for CVE-2026-73802
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-73802 (2)
-
v3.0.0 - runner - Gitea: Git with a cup of tea release-notes
Other References for CVE-2026-73802 (1)
-
https://blog.gitea.com/release-of-runner-3.0.0/ release-notes
Same Patch Batch · Gitea · 2026-10-14 · 36 CVEs total
| CVE-2026-68964 | Gitea restricted-user SSH and GPG key metadata disclosure | |
| CVE-2026-70396 | Gitea organization repository creation token scope bypass | |
| CVE-2026-70406 | Gitea private comparison disclosure with public-only tokens | |
| CVE-2026-70400 | Gitea private migration creation with public-only tokens | |
| CVE-2026-70402 | Gitea local code execution through writable Git hooks | |
| CVE-2026-67577 | Gitea restricted-user activity and heatmap disclosure | |
| CVE-2026-63792 | Gitea private reusable workflow disclosure to fork runs | |
| CVE-2026-63021 | Gitea Swift package manifest memory exhaustion | |
| CVE-2026-62925 | Gitea Alpine package parsing memory exhaustion | |
| CVE-2026-70407 | Gitea organization listing token scope bypass | |
| CVE-2026-68957 | Gitea restricted-user issue search disclosure | |
| CVE-2026-73814 | Gitea repository ownership escalation by administrators | |
| CVE-2026-73800 | Gitea reusable workflow secret exposure in pull_request_target | |
| CVE-2026-73535 | Gitea second-factor bypass through OpenID identity linking | |
| CVE-2026-73804 | Gitea API token scope escalation through HTTP signatures | |
| CVE-2026-73539 | Gitea external renderer argument injection and code execution | |
| CVE-2026-78231 | Gitea blind SSRF through OpenID assertion verification | |
| CVE-2026-78433 | Gitea private attachment disclosure through repository mismatch | |
| CVE-2026-73126 | Gitea private workflow badge token scope bypass | |
| CVE-2026-25946 | Gitea OpenID discovery server-side request forgery |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Gitea
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CVE-2026-78433
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CVE-2026-78231
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CVE-2026-73814
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CVE-2026-73804
Gitea API token scope escalation through HTTP signatures -
CVE-2026-73800
Gitea reusable workflow secret exposure in pull_request_targ
Same weakness: CWE-269
-
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V. Comments for CVE-2026-73802
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