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>
Fixes HTTP 500 when OIDC auto account linking (`ACCOUNT_LINKING=auto`)
requires local 2FA. `oauth2LinkAccount` set `linkAccount` in the session
before redirecting to 2FA but did not persist `linkAccountData`, so
`TwoFactorPost` failed with `not in LinkAccount session`. The manual
linking flow already stored both, this aligns auto-link with that
behavior.
Closes#38171
---------
Co-authored-by: bircni <bircni@icloud.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
The OAuth2 sign-in callback unconditionally set IsActive=true on the
local user row whenever the IdP authenticated them, silently undoing an
administrator's "Disable Account" action and granting the user a fresh
session in the same response. Treat the local IsActive flag as an
authoritative admin override: inactive users get a session and are
routed through the existing activate / prohibit-login pages by
verifyAuthWithOptions, matching the local-credentials sign-in path.
Adds an integration regression test that disables a linked local user
and asserts the row stays IsActive=false after a full OIDC callback.
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
fixes defect where claims where only applies on login but not during
account linking making only the second login take them into account
fixes: https://github.com/go-gitea/gitea/issues/32566
## Summary
This fixes an OIDC sign-in edge case where a stale `external_login_user`
record can still point to an organization or a deleted user.
In that situation, Gitea may keep resolving the external login to the
wrong account during sign-in. For affected instances, this matches the
behavior reported in #36439 and #37812, where a user signing in with
OIDC/Entra ID could appear as an organization, or hit a 404 after that
organization was removed.
## What changed
- validate the user resolved from `external_login_user` during
OAuth2/OIDC login
- ignore stale links when the linked user no longer exists
- ignore stale links when the linked user is not an individual user
- remove the stale external login row so the sign-in flow can relink the
external account to the correct user
## Related
- Fixes#37812
- Related to #36439
---------
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.8) <noreply@anthropic.com>
This PR adds an External ID Claim Name configuration field to the OIDC
auth source. When set, Gitea uses the specified JWT claim as the user's
`ExternalID` instead of the default `sub` claim.
This PR fixes the bug when migrating from Azure AD V2 to OIDC. When an
admin migrates the same auth source to OIDC, goth's `openidConnect`
provider defaults to using the `sub` claim as `UserID`. However, Azure
AD's `sub` is a pairwise identifier:
> `sub`: The subject is a pairwise identifier and is unique to an
application ID. If a single user signs into two different apps using two
different client IDs, those apps receive two different values for the
subject claim.
https://learn.microsoft.com/en-us/entra/identity-platform/id-token-claims-reference#payload-claims
As a result, every existing user appears as a new account after
migration.
To fix this issue, Gitea should use `oid` claim for `UserID`.
> `oid`: This ID uniquely identifies the user across applications - two
different applications signing in the same user receives the same value
in the oid claim.
Note: The `oid` claim is not included in Azure AD tokens by default. The
`profile` scope must be added to the Scopes field of the auth source.
