CVE-2026-104633 (GCVE-0-2026-104633)

Vulnerability from cvelistv5 – Published: 2026-10-06 21:35 – Updated: 2026-10-06 21:35
VLAI
Title
Gitea migration memory exhaustion from zero page size
Summary
When migrating a repository from another Gitea instance, Gitea used the page size reported in the source server's API settings to end its paginated downloads. A source that reported `max_response_items` as `0` made these loops run indefinitely and grow server memory until it was exhausted. Any user who can migrate repositories could point a migration at a server they control and cause a denial of service.
Severity
No CVSS data available.
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version CPE status
Gitea Gitea Affected: 0 , ≤ 28.0.0 (semver)
guessed Create a notification for this product.
Credits
https://github.com/kewmine https://github.com/silverwind https://github.com/bircni
Show details on NVD website
To clipboard 

{
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        {
          "defaultStatus": "unaffected",
          "packageName": "gitea.dev",
          "product": "Gitea",
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              "version": "0",
              "versionType": "semver"
            }
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/kewmine"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/silverwind"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/bircni"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "When migrating a repository from another Gitea instance, Gitea used the page size reported in the source server\u0027s API settings to end its paginated downloads. A source that reported `max_response_items` as `0` made these loops run indefinitely and grow server memory until it was exhausted. Any user who can migrate repositories could point a migration at a server they control and cause a denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
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            },
            {
              "cweId": "CWE-835",
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T21:35:26.516Z",
        "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "shortName": "Gitea"
      },
      "references": [
        {
          "name": "GitHub Security Advisory GHSA-jj5r-9rpc-8h6h",
          "tags": [
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          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jj5r-9rpc-8h6h"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39501",
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          "url": "https://github.com/go-gitea/gitea/pull/39501"
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        },
        {
          "name": "Gitea 28.1.0 release announcement",
          "tags": [
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          "url": "https://blog.gitea.com/release-of-28.1.0/"
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        {
          "name": "go-gitea/gitea v28.1.0 release",
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          "url": "https://github.com/go-gitea/gitea/releases/tag/v28.1.0"
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      ],
      "title": "Gitea migration memory exhaustion from zero page size"
    }
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  "cveMetadata": {
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    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-104633",
    "datePublished": "2026-10-06T21:35:26.516Z",
    "dateReserved": "2026-10-04T22:02:04.892Z",
    "dateUpdated": "2026-10-06T21:35:26.516Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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          }
        ],
        "id": "CVE-2026-104633",
        "lastModified": "2026-10-06T22:17:01.200",
        "metrics": {},
        "published": "2026-10-06T22:17:01.200",
        "references": [
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        "vulnStatus": "Received",
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            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "type": "Secondary"
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    }
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}



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