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CVE-2026-82556— Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgery

Quick assessment

Affected
n/a Forgejo
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 Forgejo 15.0.4 及以下版本中发现了一个漏洞。该问题影响了组件“仓库迁移处理器”（Repository Migration Handler）中 文件里的 函数。通过对该函数进行操作，会导致服务端请求伪造（Server-Side Request Forgery, SSRF）。该攻击可远程发起。利用方法已经公开，且可能被利用。修复补丁的标识为 。建议应用该补丁以修复此问题。项目维护者说明：“由于这是一个破坏性变更（breaking change），我不打算将其回退（backport）到 v15 或 v1

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1071 · Application Layer Protocol
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I. Basic Information for CVE-2026-82556

Vulnerability Information
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Vulnerability Title
Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Forgejo up to 15.0.4. This issue affects the function net.LookupIP of the file services/migrations/allowlist/is_migrate_allowed.go of the component Repository Migration Handler. Performing a manipulation results in server-side request forgery. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named b313bb83f5ff22bcc0378e0e0ca7bbd58303f168. It is recommended to apply a patch to fix this issue. The project maintainer explains: "I don't intend to backport this to v15 or v16 as it is a breaking change."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Forgejo 15.0.0 cpe:2.3:a:forgejo:forgejo:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82556

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III. Intelligence Information for CVE-2026-82556

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Patches & Fixes for CVE-2026-82556 (2)

Proof of Concept for CVE-2026-82556 (1)

Other References for CVE-2026-82556 (3)

IV. Related Vulnerabilities

Same product: Forgejo
Same vendor: n/a
Same weakness: CWE-918

V. Comments for CVE-2026-82556

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