vulnerability / NVI-00012945 / Revision 2
Gitea: SSRF via Migration Asset Downloads Bypasses hostmatcher — Reads Internal Files and Cloud Metadata
GitHub lists this reviewed advisory for code.gitea.io/gitea, gitea.dev. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
7.5 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
7.5 HIGH (3.1)
134c704f-9b21-4f2e-91b3-4a467353bcc0 severity; no combined Null risk score.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
code.gitea.io/gitea
source listed< 1.27.0
### Summary Gitea has robust SSRF protection via `hostmatcher.NewDialContext()` for webhook and migration clone URLs, which validates resolved IPs at the TCP dial level. However, three code paths use raw `http.Get()` (Go's `DefaultClient`) which completely bypasses this protection, enabling SSRF to internal services and local file read via the `file://` scheme. ### Vulnerable Code **File: `modules/uri/uri.go` (line 32) -- Core vulnerability** ```go func Open(uriStr string) (io.ReadCloser, error) { u, err := url.Parse(uriStr) switch strings.ToLower(u.Scheme) { case "http", "https": f, err := http.Get(uriStr) // RAW http.Get -- no hostmatcher filtering return f.Body, nil case "file": return os.Open(u.Path) // LOCAL FILE READ via file:// scheme } } ``` **Callers in migration path:** - `services/migrations/gitea_uploader.go:340` -- `uri.Open(*asset.DownloadURL)` for release assets - `services/migrations/gitea_uploader.go:586` -- `uri.Open(pr.PatchURL)` for PR patches **File: `services/migrations/dump.go` (lines 312, 453)** ```go // Line 312 -- release asset download resp, err := http.Get(*asset.DownloadURL) // Line 453 -- PR
gitea.dev
source listed< 1.27.0
### Summary Gitea has robust SSRF protection via `hostmatcher.NewDialContext()` for webhook and migration clone URLs, which validates resolved IPs at the TCP dial level. However, three code paths use raw `http.Get()` (Go's `DefaultClient`) which completely bypasses this protection, enabling SSRF to internal services and local file read via the `file://` scheme. ### Vulnerable Code **File: `modules/uri/uri.go` (line 32) -- Core vulnerability** ```go func Open(uriStr string) (io.ReadCloser, error) { u, err := url.Parse(uriStr) switch strings.ToLower(u.Scheme) { case "http", "https": f, err := http.Get(uriStr) // RAW http.Get -- no hostmatcher filtering return f.Body, nil case "file": return os.Open(u.Path) // LOCAL FILE READ via file:// scheme } } ``` **Callers in migration path:** - `services/migrations/gitea_uploader.go:340` -- `uri.Open(*asset.DownloadURL)` for release assets - `services/migrations/gitea_uploader.go:586` -- `uri.Open(pr.PatchURL)` for PR patches **File: `services/migrations/dump.go` (lines 312, 453)** ```go // Line 312 -- release asset download resp, err := http.Get(*asset.DownloadURL) // Line 453 -- PR
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. NIST National Vulnerability Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
- NVD lastModified does not establish freshness of every associated CPE record.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-2wm4-vwp6-v7xc ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
- CVE-2026-59765 ↗
NIST National Vulnerability Database · official catalog
Observed . This product uses data from the NVD API but is not endorsed or certified by the NVD.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 2 ·
Source facts changed; compare the preserved prior revision.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.