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fix: various security fixes (#38406)

Browse Source 
Addresses a batch of privately reported security issues, grouped by
area:

- **SSRF** - migration PR-patch/asset fetches, OAuth2 avatar & OpenID
discovery, pull-mirror URL re-validation, and the outbound proxy path.
- **Access-token scope** - prevent scope escalation on token creation;
keep public-only tokens confined (feeds, packages, Actions listings,
star/watch lists, limited/private owners).
- **Access control / disclosure** - go-get default-branch leak, webhook
authorization-header leak, watch clearing on private transitions,
label/attachment scoping.
- **Denial of service** - input bounds for npm dist-tags, Debian control
files, Arch file lists, and SSH keys.

### 📌 Attention for site admins

Not breaking - existing configs keep working - but two changes are worth
a look:

- **New SSRF protection** Outbound requests (migrations, OAuth2 avatars,
OpenID discovery, pull mirrors, proxy path) are now validated against
the allow/block host lists. If your instance legitimately reaches
internal hosts, you may need to add them to
`[security].ALLOWED_HOST_LIST` (and the relevant `ALLOW_LOCALNETWORKS`
settings).
- **Deprecation** `[webhook].ALLOWED_HOST_LIST` is deprecated and will
be removed in a future release. Use `[security].ALLOWED_HOST_LIST`
instead; the old key still works for now.

---------

Co-authored-by: TheFox0x7 <thefox0x7@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>
This commit is contained in:
bircni
2026-07-12 19:14:09 +02:00
committed by GitHub
parent d2bd1589fe
commit f69e15afe7
93 changed files with 1715 additions and 138 deletions
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custom/conf/app.example.ini
+7 -7
View File
@@ -536,6 +536,13 @@ INTERNAL_TOKEN =
;; Leave it empty to apply the default policy, or set it to "unset" to disable Content-Security-Policy.
;CONTENT_SECURITY_POLICY_GENERAL =
;; Webhook and oauth2 clients can only call allowed hosts for security reasons. Comma separated list, eg: external, 192.168.1.0/24, *.mydomain.com
;; Built-in: loopback (for localhost), private (for LAN/intranet), external (for public hosts on internet), * (for all hosts)
;; CIDR list: 1.2.3.0/8, 2001:db8::/32
;; Wildcard hosts: *.mydomain.com, 192.168.100.*
;; This list is enforced on direct connections only. When an HTTP proxy is configured, restricting the proxied target is the proxy server's responsibility.
;ALLOWED_HOST_LIST = external
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
[camo]
@@ -1755,13 +1762,6 @@ LEVEL = Info
;; Deliver timeout in seconds
;DELIVER_TIMEOUT = 5
;;
;; Webhook can only call allowed hosts for security reasons. Comma separated list, eg: external, 192.168.1.0/24, *.mydomain.com
;; Built-in: loopback (for localhost), private (for LAN/intranet), external (for public hosts on internet), * (for all hosts)
;; CIDR list: 1.2.3.0/8, 2001:db8::/32
;; Wildcard hosts: *.mydomain.com, 192.168.100.*
;; Since 1.15.7. Default to * for 1.15.x, external for 1.16 and later
;ALLOWED_HOST_LIST = external
;;
;; Allow insecure certification
;SKIP_TLS_VERIFY = false
;;