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CVE-2026-104633— Gitea migration memory exhaustion from zero page size

Quick assessment

Affected
Gitea Gitea
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在从另一个 Gitea 实例迁移仓库时，Gitea 会使用源服务器 API 设置中报告的页面大小来决定分页下载的终止条件。如果源服务器报告的 为 ，会导致分页下载循环无限运行，并持续消耗服务器内存，直至耗尽。任何能够执行仓库迁移操作的用户，都可以通过指向其控制的服务器发起迁移请求，从而造成拒绝服务（DoS）攻击。

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I. Basic Information for CVE-2026-104633

Vulnerability Information
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Vulnerability Title
Gitea migration memory exhaustion from zero page size
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Gitea Gitea 0 ~ 28.0.0 -

II. Public POCs for CVE-2026-104633

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III. Intelligence Information for CVE-2026-104633

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Other References for CVE-2026-104633 (5)

Same Patch Batch · Gitea · 2026-10-06 · 30 CVEs total

CVE-2026-96399 Gitea denial of service through external issue tracker patterns
CVE-2026-97626 Gitea profile feed disclosure bypassing user visibility
CVE-2026-96594 Gitea repository media API stored XSS
CVE-2026-101023 Gitea OAuth2 refresh token grant accepts access tokens
CVE-2026-105267 Gitea tag delete route deletes releases without release permission
CVE-2026-105268 Gitea issue attachment API allows changing comment attachments
CVE-2026-89182 Gitea push-to-create bypass of FORCE_PRIVATE policy
CVE-2026-86684 Gitea push mirror local path check uses the repository owner
CVE-2026-97208 Gitea push mirror API bypass of DISABLE_NEW_PUSH policy
CVE-2026-73278 Gitea WebAuthn bypass during OAuth and OIDC sign-in
CVE-2026-79960 Gitea deploy key pushes acting as the repository owner
CVE-2026-70357 Gitea repository migration SSRF through DNS rebinding
CVE-2026-96580 Gitea Actions memory exhaustion through large static matrices
CVE-2026-96589 Gitea private repository access retained after rejected transfer
CVE-2026-96400 Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS
CVE-2026-94205 Gitea fork workflow approval bypass through maintainer-triggered events
CVE-2026-96404 Gitea installer authentication bypass for existing accounts
CVE-2026-104626 Gitea fork workflow job revival through later approval
CVE-2026-104632 Gitea fork workflow approval bypass through cancel and rerun
CVE-2026-104636 Gitea SSRF through Git HTTP redirects in mirrors and fetches

Showing top 20 of 30 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Gitea
Same vendor: Gitea
Same weakness: CWE-400

V. Comments for CVE-2026-104633

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