remove /gateway endpoint

Unauthenticated arbitrary db.set abuse vector. Exploited to inflate user
balances and override safety controls (bitcoin:limit, limit, hardfreeze,
freeze) in real time, leading to a hot-wallet drain. Route and handler
both fully removed.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

2 files changed, 0 insertions, 10 deletions

diff --git a/index.ts b/index.ts
index 78c43598..793bf2f8 100644
--- a/index.ts
+++ b/index.ts
@@ -84,7 +84,6 @@ app.post("/take", auth, payments.take);
 app.post("/print", auth, payments.print);
 app.post("/send/:lnaddress/:amount", auth, payments.lnaddress);
 app.post("/send", auth, payments.internal);
-app.post("/gateway", payments.gateway);
 app.post("/replace", auth, payments.replace);
 app.get("/decode/:bolt11", payments.decode);
 app.post("/fetchinvoice", payments.fetchinvoice);
diff --git a/routes/payments.ts b/routes/payments.ts
index 1845512c..43c098b6 100644
--- a/routes/payments.ts
+++ b/routes/payments.ts
@@ -626,15 +626,6 @@ export default {
     }
   },
 
-  async gateway(req, res) {
-    const {
-      body: { short_channel_id, webhook },
-    } = req;
-
-    await s(short_channel_id, webhook);
-    res.send({ ok: true });
-  },
-
   async replace(req, res) {
     const {
       body: { id },