### Summary The Dragonfly Manager exposes `GET /api/v1/oauth` and `GET /api/v1/oauth/:id` to unauthenticated clients. The response body deserializes the entire `manager/models.Oauth` struct, which includes the `client_secret` field. Any network-reachable attacker can read the OAuth client secrets configured for `github` or `google` providers, defeating the confidentiality guarantee of those secrets and enabling subsequent abuse against the connected identity providers. ### Affected versions `github.com/dragonflyoss/dragonfly` `<= v2.4.3` (and current `main` at commit `46a8f1e`). The vulnerable wiring is present back to the introduction of OAuth GET handlers and was not addressed by GHSA-j8hf-cp34-g4j7 / CVE-2026-24124, whose remediation only added `jwt + rbac` middleware to the `/jobs` group. ### Privilege required Unauthenticated. The only precondition is that an administrator has registered at least one OAuth provider via `POST /api/v1/oauth` (a one-time setup for tenants that enable GitHub / Google sign-in). ### Vulnerable code [`manager/router/router.go:134-140`](https://github.com/dragonflyoss/dragonfly/blob/e1491bf6134fe307b09e82e11fa94b0587dcd323/manager/router/router.go#L134-L140) (v2.4.3) — the `/oauth` group registration: ```go // Oauth. oa := apiv1.Group("/oauth") oa.POST("", jwt.MiddlewareFunc(), rbac, h.CreateOauth) oa.DELETE(":id", jwt.MiddlewareFunc(), rbac, h.DestroyOauth) oa.PATCH(":id", jwt.MiddlewareFunc(), rbac, h.UpdateOauth) oa.GET(":id", h.GetOauth) oa.GET("", h.GetOauths) ``` Note the asymmetry inside the same `oa` route group: `POST`, `PATCH`, and `DELETE` explicitly attach `jwt.MiddlewareFunc(), rbac` as per-route middleware, but the two `GET` handlers omit both. Compare with the sibling group three lines below at [`manager/router/router.go:143-148`](https://github.com/dragonflyoss/dragonfly/blob/e1491bf6134fe307b09e82e11fa94b0587dcd323/manager/router/router.go#L143-L148), the `/clusters` group: ```go c := apiv1.Group("/clusters", jwt.MiddlewareFunc(), rbac) c.POST("", h.CreateCluster) c.DELETE(":id", h.DestroyCluster) c.PATCH(":id", h.UpdateCluster) c.GET(":id", h.GetCluster) c.GET("", h.GetClusters) ``` Here the middleware pair is attached once at the group level, so every verb on `/clusters` is guarded. The OAuth GETs are an unguarded sibling of the same primitive that GHSA-j8hf-cp34-g4j7 (Jan 2026) patched on the `/jobs` group. This is `sibling-method-dispatch-target` of the AP-012 sub-shape lens: same module, same router file, same anchor primitive ("group lacking JWT + RBAC"), parallel GET methods missed. The handler at [`manager/handlers/oauth.go:127-141`](https://github.com/dragonflyoss/dragonfly/blob/e1491bf6134fe307b09e82e11fa94b0587dcd323/manager/handlers/oauth.go#L127-L141) returns the model directly: ```go func (h *Handlers) GetOauth(ctx *gin.Context) { var params types.OauthParams if err := ctx.ShouldBindUri(&params); err != nil { ctx.JSON(http.StatusUnprocessableEntity, gin.H{"errors": err.Error()}) return } oauth, err := h.service.GetOauth(ctx.Request.Context(), params.ID) if err != nil { ctx.Error(err) // nolint: errcheck return } ctx.JSON(http.StatusOK, oauth) } ``` [`manager/handlers/oauth.go:155-171`](https://github.com/dragonflyoss/dragonfly/blob/e1491bf6134fe307b09e82e11fa94b0587dcd323/manager/handlers/oauth.go#L155-L171) has the parallel list handler: ```go func (h *Handlers) GetOauths(ctx *gin.Context) { var query types.GetOauthsQuery if err := ctx.ShouldBindQuery(&query); err != nil { ctx.JSON(http.StatusUnprocessableEntity, gin.H{"errors": err.Error()}) return } h.setPaginationDefault(&query.Page, &query.PerPage) oauth, count, err := h.service.GetOauths(ctx.Request.Context(), query) if err != nil { ctx.Error(err) // nolint: errcheck return } h.setPaginationLinkHeader(ctx, query.Page, query.PerPage, int(count)) ctx.JSON(http.StatusOK, oauth) } ``` [`manager/models/oauth.go:19-26`](https://github.com/dragonflyoss/dragonfly/blob/e1491bf6134fe307b09e82e11fa94b0587dcd323/manager/models/oauth.go#L19-L26) declares `ClientSecret` with no `json:"-"` tag, so it is serialized into every response: ```go type Oauth struct { BaseModel Name string `gorm:"column:name;type:varchar(256);index:uk_oauth2_name,unique;not null;comment:oauth2 name" json:"name"` BIO string `gorm:"column:bio;type:varchar(1024);comment:biography" json:"bio"` ClientID string `gorm:"column:client_id;type:varchar(256);index:uk_oauth2_client_id,unique;not null;comment:client id for oauth2" json:"client_id"` ClientSecret string `gorm:"column:client_secret;type:varchar(1024);not null;comment:client secret for oauth2" json:"client_secret"` RedirectURL string `gorm:"column:redirect_url;type:varchar(1024);comment:authorization callback url" json:"redirect_url"` } ``` ### How an unauthenticated request reaches the OAuth client_secret 1. `gin.Engine` routes `GET /api/v1/oauth/:id` to the `oa` group registered at [`manager/route

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