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No exploitation reportedFix available

CVE-2026-73802

Gitea Runner host isolation bypass through container options

No exploitation reported by the sources we read.

  • Published2026-10-14
  • Fixed in1.0.9-0.20260731160927-34bfa1915022
  • WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-1415:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-73802?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-73802?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV
gitea.com/gitea/runner
BranchAffectedFixed in
1.0< 1.0.9-0.20260731160927-34bfa19150221.0.9-0.20260731160927-34bfa1915022

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update gitea.com/gitea/runner to 1.0.9-0.20260731160927-34bfa1915022

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2026-10-18
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.18.82026-10-18
  • CNAweakness (CWE)CWE-269read 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-10-14
Last Modified
2026-10-18
NVD status
Deferred

Frequently asked questions

What is CVE-2026-73802?

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.

Is CVE-2026-73802 actively exploited?

Active exploitation of CVE-2026-73802 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-73802?

CVE-2026-73802 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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