---
id: CVE-2026-63021
title: >-
  Gitea's Swift package parser limits each manifest to 128 KiB but does not
  limit the number of manifests or their aggregate size before reading them into
  memory
summary: >-
  Gitea's Swift package parser limits each manifest to 128 KiB but does not
  limit the number of manifests or their aggregate size before reading them into
  memory. An authenticated user with package-publish permission can upload a
  highly co…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T16:17:47.903'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63021'
references:
  - url: 'https://blog.gitea.com/release-of-1.27.3/'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/39025'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/39032'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/releases/tag/v1.27.3'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-fqxf-w92m-prvq'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
tags:
  - nvd
ingestedAt: '2026-10-14T15:36:14.023Z'
---

## Overview

Gitea's Swift package parser limits each manifest to 128 KiB but does not limit the number of manifests or their aggregate size before reading them into memory. An authenticated user with package-publish permission can upload a highly compressed archive containing many manifests, causing allocations far larger than the uploaded archive. This can exhaust memory, terminate the process, or cause request failures.

## Remediation

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