CVE-2026-82556

Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgery

State: Published
Severity: 5.3 Medium
Published: Aug 30, 2026
Updated: Aug 31, 2026
Reserved: Aug 29, 2026

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."

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-918 Server-Side Request Forgery

Affected Products

Product	Versions
Forgejon/a	15.0.0Affected 15.0.1Affected 15.0.2Affected 15.0.3Affected 15.0.4Affected

References

VDB-397072 | Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forgeryvdb-entrytechnical-description
VDB-397072 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-82556 | CVE Analysis and Reportthird-party-advisory
Submit #891889 | Forgejo 15.0.4 SSRFthird-party-advisory
https://codeberg.org/forgejo/forgejo/issues/13433broken-linkexploitissue-tracking
https://codeberg.org/forgejo/forgejo/pulls/13490broken-link
https://codeberg.org/forgejo/forgejo/commit/b313bb83f5ff22bcc0378e0e0ca7bbd58303f168patch

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