CVE-2026-101027

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Source
https://cve.org/CVERecord?id=CVE-2026-101027
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101027.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-101027
Aliases
Downstream
MINI (2)
Published
2026-10-06T19:23:20Z
Modified
2026-10-28T02:30:25Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Gitea migration SSRF through ALLOWED_DOMAINS address check bypass
Details

When [migrations] ALLOWED_DOMAINS was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass ALLOW_LOCALNETWORKS = false, reaching internal services from the Gitea server. Instances without ALLOWED_DOMAINS configured are not affected by this specific bypass.

Database specific 
{
    "cna_assigner":  "Gitea",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101027.json"
}
References

Affected packages

Git / github.com/go-gitea/gitea

Affected ranges

Type
GIT
Repo
https://github.com/go-gitea/gitea
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
15b8a5805adf57c5189602008d38cccfd3c795e0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "28.0.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "original_tag":  "v28.0.0",
            "range":  [
                {
                    "fixed":  "15b8a5805adf57c5189602008d38cccfd3c795e0"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.9.99
v1.*
v1.0.0
v1.1.0
v1.10.0-dev
v1.10.0-rc1
v1.10.5
v1.11.0-dev
v1.11.0-rc1
v1.12.0-dev
v1.13.0-dev
v1.14.0-dev
v1.15.0-dev
v1.15.0-rc1
v1.16.0-dev
v1.16.0-rc1
v1.17.0-dev
v1.18.0-dev
v1.18.0-rc0
v1.19.0-dev
v1.19.0-rc0
v1.20.0-dev
v1.20.0-rc0
v1.21.0-dev
v1.21.0-rc0
v1.22.0-dev
v1.22.0-rc0
v1.22.0-rc1
v1.23.0-dev
v1.24.0-dev
v1.25.0-dev
v1.26.0-dev
v1.27.0-dev
v1.28.0-dev
v1.5.0-dev
v1.5.0-rc1
v1.6.0-dev
v1.6.0-rc1
v1.7.0-dev
v1.9.0-dev
v1.9.0-rc1
v29.*
v29.0.0-dev

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101027.json"