From cdc26c00ac0df98bd863cec7acc8c932b10debcf Mon Sep 17 00:00:00 2001 From: "google-labs-jules[bot]" <161369871+google-labs-jules[bot]@users.noreply.github.com> Date: Fri, 20 Mar 2026 11:33:38 +0000 Subject: [PATCH 1/2] =?UTF-8?q?=F0=9F=9B=A1=EF=B8=8F=20Sentinel:=20[HIGH]?= =?UTF-8?q?=20Cache=20health=20check=20endpoint=20to=20prevent=20upstream?= =?UTF-8?q?=20DoS?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Co-authored-by: ralksta <16941050+ralksta@users.noreply.github.com> --- .jules/sentinel.md | 5 +++++ app/api/health/route.ts | 23 +++++++++++++++++++- pnpm-lock.yaml | 47 ++++++++++++++++++++++++++++++++++++++--- 3 files changed, 71 insertions(+), 4 deletions(-) diff --git a/.jules/sentinel.md b/.jules/sentinel.md index c2fc2de..f2f9883 100644 --- a/.jules/sentinel.md +++ b/.jules/sentinel.md @@ -3,3 +3,8 @@ **Vulnerability:** The `/api/exif/[id]` endpoint lacked rate limiting, making it vulnerable to DoS attacks. An attacker could rapidly request EXIF metadata, exhausting server resources and the Immich API rate limits. **Learning:** Even simple GET endpoints that fetch metadata from an upstream server (like Immich) must be protected with rate limiting to prevent downstream DoS and resource exhaustion, especially when they perform backend API requests per hit. **Prevention:** Always implement rate limiting on endpoints that proxy requests or query a backend API, utilizing the shared `checkRateLimit` utility. + +## 2024-03-20 - [DoS via Upstream Healthcheck Abuse] +**Vulnerability:** The `/api/health` endpoint lacked downstream protection and made a live upstream request to the Immich server (`immich.ping()`) on every hit. An attacker could exhaust backend resources by spamming the health check endpoint. +**Learning:** Returning HTTP 429 (rate limiting) on a health check endpoint is an architectural anti-pattern that breaks load balancers and container orchestrators (causing self-inflicted downtime). +**Prevention:** To secure health checks that rely on upstream resources without breaking infrastructure polling, implement a short-lived in-memory cache (e.g., 10 seconds) for the upstream response rather than blocking the request entirely. diff --git a/app/api/health/route.ts b/app/api/health/route.ts index 122e45f..000bf6d 100644 --- a/app/api/health/route.ts +++ b/app/api/health/route.ts @@ -10,8 +10,29 @@ import { immich } from '@/lib/immich'; const startTime = Date.now(); +// Cache the health check result for 10 seconds to prevent +// DoS attacks against the upstream Immich server while still +// allowing frequent polling from load balancers/orchestrators. +let cachedImmichOkPromise: Promise | null = null; +let lastCheckTime = 0; +const CACHE_DURATION_MS = 10_000; + export async function GET() { - const immichOk = await immich.ping(); + const now = Date.now(); + if (!cachedImmichOkPromise || now - lastCheckTime > CACHE_DURATION_MS) { + cachedImmichOkPromise = immich.ping(); + lastCheckTime = now; + } + + // Await the potentially shared promise to prevent a thundering herd + // of concurrent requests from hitting the upstream server on a cache miss. + let immichOk = false; + try { + immichOk = await cachedImmichOkPromise; + } catch { + cachedImmichOkPromise = null; // reset on error so next request retries + immichOk = false; + } const body = { status: immichOk ? 'ok' : 'degraded', diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml index 20cef5f..6a020c7 100644 --- a/pnpm-lock.yaml +++ b/pnpm-lock.yaml @@ -8,9 +8,6 @@ importers: .: dependencies: - '@types/leaflet': - specifier: ^1.9.21 - version: 1.9.21 js-yaml: specifier: ^4.1.1 version: 4.1.1 @@ -36,6 +33,9 @@ importers: '@types/js-yaml': specifier: ^4.0.9 version: 4.0.9 + '@types/leaflet': + specifier: ^1.9.21 + version: 1.9.21 '@types/node': specifier: ^20 version: 20.19.37 @@ -392,89 +392,105 @@ packages: resolution: {integrity: sha512-excjX8DfsIcJ10x1Kzr4RcWe1edC9PquDRRPx3YVCvQv+U5p7Yin2s32ftzikXojb1PIFc/9Mt28/y+iRklkrw==} cpu: [arm64] os: [linux] + libc: [glibc] '@img/sharp-libvips-linux-arm@1.2.4': resolution: {integrity: sha512-bFI7xcKFELdiNCVov8e44Ia4u2byA+l3XtsAj+Q8tfCwO6BQ8iDojYdvoPMqsKDkuoOo+X6HZA0s0q11ANMQ8A==} cpu: [arm] os: [linux] + libc: [glibc] '@img/sharp-libvips-linux-ppc64@1.2.4': resolution: {integrity: 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resolution: {integrity: sha512-NDYMpsXYJJaj+I7UdwIuHHNxXZ/b/N2hR15NyH3m2qAtb/hHPA4g4SuuvrdxetTdndfj9b1WOmy73kcPRoERUg==} cpu: [riscv64] os: [linux] + libc: [glibc] '@rollup/rollup-linux-riscv64-musl@4.59.0': resolution: {integrity: sha512-nLckB8WOqHIf1bhymk+oHxvM9D3tyPndZH8i8+35p/1YiVoVswPid2yLzgX7ZJP0KQvnkhM4H6QZ5m0LzbyIAg==} cpu: [riscv64] os: [linux] + libc: [musl] '@rollup/rollup-linux-s390x-gnu@4.59.0': resolution: {integrity: sha512-oF87Ie3uAIvORFBpwnCvUzdeYUqi2wY6jRFWJAy1qus/udHFYIkplYRW+wo+GRUP4sKzYdmE1Y3+rY5Gc4ZO+w==} cpu: [s390x] os: [linux] + libc: [glibc] '@rollup/rollup-linux-x64-gnu@4.59.0': resolution: {integrity: sha512-3AHmtQq/ppNuUspKAlvA8HtLybkDflkMuLK4DPo77DfthRb71V84/c4MlWJXixZz4uruIH4uaa07IqoAkG64fg==} cpu: [x64] os: [linux] + libc: [glibc] '@rollup/rollup-linux-x64-musl@4.59.0': resolution: {integrity: sha512-2UdiwS/9cTAx7qIUZB/fWtToJwvt0Vbo0zmnYt7ED35KPg13Q0ym1g442THLC7VyI6JfYTP4PiSOWyoMdV2/xg==} cpu: [x64] os: [linux] + libc: [musl] 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'@unrs/resolver-binding-linux-riscv64-musl@1.11.1': resolution: {integrity: sha512-mJ5vuDaIZ+l/acv01sHoXfpnyrNKOk/3aDoEdLO/Xtn9HuZlDD6jKxHlkN8ZhWyLJsRBxfv9GYM2utQ1SChKew==} cpu: [riscv64] os: [linux] + libc: [musl] '@unrs/resolver-binding-linux-s390x-gnu@1.11.1': resolution: {integrity: sha512-kELo8ebBVtb9sA7rMe1Cph4QHreByhaZ2QEADd9NzIQsYNQpt9UkM9iqr2lhGr5afh885d/cB5QeTXSbZHTYPg==} cpu: [s390x] os: [linux] + libc: [glibc] '@unrs/resolver-binding-linux-x64-gnu@1.11.1': resolution: {integrity: sha512-C3ZAHugKgovV5YvAMsxhq0gtXuwESUKc5MhEtjBpLoHPLYM+iuwSj3lflFwK3DPm68660rZ7G8BMcwSro7hD5w==} cpu: [x64] os: [linux] + libc: [glibc] '@unrs/resolver-binding-linux-x64-musl@1.11.1': resolution: {integrity: sha512-rV0YSoyhK2nZ4vEswT/QwqzqQXw5I6CjoaYMOX0TqBlWhojUf8P94mvI7nuJTeaCkkds3QE4+zS8Ko+GdXuZtA==} cpu: [x64] os: [linux] + libc: [musl] '@unrs/resolver-binding-wasm32-wasi@1.11.1': resolution: {integrity: sha512-5u4RkfxJm+Ng7IWgkzi3qrFOvLvQYnPBmjmZQ8+szTK/b31fQCnleNl1GgEt7nIsZRIf5PLhPwT0WM+q45x/UQ==} From 8cd96d4dac021fc72ed2cd3a303fb58ef4b7369b Mon Sep 17 00:00:00 2001 From: "google-labs-jules[bot]" <161369871+google-labs-jules[bot]@users.noreply.github.com> Date: Fri, 20 Mar 2026 11:38:33 +0000 Subject: [PATCH 2/2] Fix CI failures due to AUTH_SECRET and missing Playwright types Co-authored-by: ralksta <16941050+ralksta@users.noreply.github.com> --- .github/workflows/ci.yml | 1 + scripts/screenshots.ts | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index d8dee55..f614cd0 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -41,3 +41,4 @@ jobs: # Minimal env vars so Next.js build doesn't bail early on env validation IMMICH_URL: http://localhost:2283 IMMICH_API_KEY: placeholder-key-for-ci + AUTH_SECRET: placeholder-secret-for-ci diff --git a/scripts/screenshots.ts b/scripts/screenshots.ts index 4a0ee31..fd7dae9 100644 --- a/scripts/screenshots.ts +++ b/scripts/screenshots.ts @@ -35,7 +35,7 @@ async function main() { const originalYaml = fs.readFileSync(SETTINGS_YAML, 'utf8'); // Dynamic import for Playwright (may not be installed globally) - const { chromium } = await import('playwright'); + const { chromium } = await import('@playwright/test'); const browser = await chromium.launch(); try { @@ -226,7 +226,7 @@ async function waitForServer(url: string, timeoutMs: number): Promise { * Wait for all elements to finish loading their full-resolution images. * This prevents capturing blurhash placeholders instead of real photos. */ -async function waitForImages(page: import('playwright').Page): Promise { +async function waitForImages(page: import('@playwright/test').Page): Promise { await page.waitForTimeout(1000); // Initial settle await page.evaluate((timeout) => {