Description
When parsing an uploaded Helm chart, Gitea decompressed the archive and read every tar entry while looking for `Chart.yaml` without limiting the decompressed size, and did so before the package size quota was checked; the quota only considers the compressed upload size. A user with package write access to an owner, for example their own account on an instance with open registration, could repeatedly upload small, highly compressed archives that make the server spend CPU time proportional to the decompressed size, degrading the availability of the Gitea instance. The issue does not allow code execution or data access.
Published: 2026-11-01
Score: n/a
EPSS: n/a
KEV: No
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History

Sun, 01 Nov 2026 10:00:00 +0000

Type Values Removed Values Added
Description When parsing an uploaded Helm chart, Gitea decompressed the archive and read every tar entry while looking for `Chart.yaml` without limiting the decompressed size, and did so before the package size quota was checked; the quota only considers the compressed upload size. A user with package write access to an owner, for example their own account on an instance with open registration, could repeatedly upload small, highly compressed archives that make the server spend CPU time proportional to the decompressed size, degrading the availability of the Gitea instance. The issue does not allow code execution or data access.
Title Gitea Helm chart upload decompression denial of service
Weaknesses CWE-400
CWE-409
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-11-01T09:48:45.233Z

Reserved: 2026-11-01T08:50:49.241Z

Link: CVE-2026-117677

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-01T10:18:35.780

Modified: 2026-11-01T10:18:35.893

Link: CVE-2026-117677

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-01T11:30:06Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-409

    Improper Handling of Highly Compressed Data (Data Amplification)