---
id: CVE-2026-117677
title: Gitea Helm chart upload decompression denial of service
summary: >-
  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 cons…
severity: none
cwe:
  - CWE-400
  - CWE-409
vendor: Gitea
product: gitea.dev
affected:
  - gitea.dev < 28.3.0
published: '2026-11-01'
updated: '2026-11-01'
sourceUpdated: '2026-11-01T09:48:45.233Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117677'
references:
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-r6mh-qg79-rqj2'
    label: GitHub Security Advisory GHSA-r6mh-qg79-rqj2
  - url: 'https://github.com/go-gitea/gitea/pull/39942'
    label: 'Fix: go-gitea/gitea pull request #39942'
  - url: 'https://github.com/go-gitea/gitea/pull/40085'
    label: 'Fix backport to release/v28: go-gitea/gitea pull request #40085'
  - url: 'https://blog.gitea.com/release-of-28.3.0/'
    label: Gitea 28.3.0 release announcement
  - url: 'https://github.com/go-gitea/gitea/releases/tag/v28.3.0'
    label: go-gitea/gitea v28.3.0 release
tags:
  - cve.org
epss: 0.0021
epssPercentile: 0.11294
ingestedAt: '2026-11-05T18:28:50.706Z'
---

## Overview

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.

## Affected

- `gitea.dev < 28.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.