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CVE-2026-101029— Gitea migration and pull mirror SSRF through multi-answer DNS

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.

Gitea 的仓库迁移和拉取镜像的出口检查可能存在绕过风险：当主机名返回多个 DNS 解析结果时，系统校验的 IP 地址未必是后续 Git 实际连接的地址。具有低权限但可创建迁移或镜像的用户，可利用此缺陷引导服务器连接至内部服务，从而读取或写入可访问的内部 Git 或 HTTP 端点。此外，内部响应内容还可能通过迁移和镜像过程中的错误消息泄露。

AI Predicted 6.5 Difficulty: Moderate

Affected Version Matrix 1

VendorProduct Version RangeStatus
Gitea Gitea ≤ 1.27.3 affected
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I. Basic Information for CVE-2026-101029

Vulnerability Information
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Vulnerability Title
Gitea migration and pull mirror SSRF through multi-answer DNS
Source: CVE Program / CVE List V5
Vulnerability Description
Gitea's repository migration and pull mirror egress checks could be bypassed with a hostname that returns multiple DNS answers, because the address that was validated was not necessarily the address Git later connected to. A low-privileged user who can create migrations or mirrors could direct the server to internal services, reading from and writing to reachable internal Git or HTTP endpoints. Content from internal responses could additionally be disclosed through migration and mirror error messages.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Gitea Gitea 0 ~ 1.27.3 -

II. Public POCs for CVE-2026-101029

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III. Intelligence Information for CVE-2026-101029

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Other References for CVE-2026-101029 (5)

Same Patch Batch · Gitea · 2026-10-06 · 21 CVEs total

CVE-2026-104632 Gitea fork workflow approval bypass through cancel and rerun
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-2026-96399 Gitea denial of service through external issue tracker patterns
CVE-2026-96404 Gitea installer authentication bypass for existing accounts
CVE-2026-104626 Gitea fork workflow job revival through later approval
CVE-2026-94205 Gitea fork workflow approval bypass through maintainer-triggered events
CVE-2026-104636 Gitea SSRF through Git HTTP redirects in mirrors and fetches
CVE-2026-101027 Gitea migration SSRF through ALLOWED_DOMAINS address check bypass
CVE-2026-95106 Gitea review and execution mismatch through duplicate tree entries
CVE-2026-95112 Gitea issue reference parsing CPU exhaustion
CVE-2026-89430 Gitea push mirror SSRF and forced writes to internal Git hosts
CVE-2026-103504 Gitea API team demotion not applied to unit permissions
CVE-2026-103667 Gitea container registry stored XSS through blob media type
CVE-2026-103059 Gitea built-in SSH server authentication bypass through key case folding
CVE-2026-103670 Gitea trusted workflow cancellation by unapproved fork runs

IV. Related Vulnerabilities

Same product: Gitea
Same vendor: Gitea
Same weakness: CWE-209

V. Comments for CVE-2026-101029

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