Read 2026-11-03
hkuds/deeptutor: technical due diligence, read from its repository
What Borehole read in hkuds/deeptutor's code and history at f7aed07: its licence, security advisories, releases, review practice, tests, dependencies and operations. Every finding cites the file and line it rests on. The full report also covers the team and asks the questions the code cannot answer.
| Dimension | Rating |
|---|---|
| Architecture & Codebase — including AI provenance | adequate |
| Engineering Process & SDLC Maturity | adequate |
| Product & Engineering Maturity | strong |
| Security & Reliability Posture | adequate |
| Observability & Operations | adequate |
| Fit with the Acquirer | not assessable |
What the repository says
LICENSE: Relicensed: AGPL-3.0 → Apache-2.0 (2026-04-04)
Architecture & Codebase — including AI provenance
adequatedeeptutor/api/routers/knowledge.py is 5,227 lines, 39× this codebase's median file
adequateThe median source file here is 133 lines. 50 files exceed 1,330 lines, the largest being 5,227. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.
deeptutor/api/routers/knowledge.py:1 — 5,227 lines (39× median) |
deeptutor/services/session/sqlite_store.py:1 — 4,863 lines (36× median) |
web/features/chat/ChatStateAdapter.tsx:1 — 4,355 lines (32× median) |
deeptutor/capabilities/mastery/tools.py:1 — 3,862 lines (29× median) |
deeptutor/learning/service.py:1 — 3,359 lines (25× median) |
4 base images float: no version, or `latest`
adequate4 of 9 `FROM` lines in product Dockerfiles name an image without a version, or with `latest`. Each build pulls whatever the registry serves that day, so the image that ships can change without a commit, and last month's build cannot be reproduced. Pin a version, or a digest.
Dockerfile:415 — base image without a version |
Dockerfile:416 — base image without a version |
Dockerfile:483 — base image without a version |
Engineering Process & SDLC Maturity
adequateTests are retried until they pass
adequateThe suite is configured to retry failing tests (web/playwright.config.ts). A retry turns a flaky test green without saying why it failed, so a green build means the tests passed eventually. Ask how many retries a typical run needs, and which tests need them.
web/playwright.config.ts:13 — test retry |
6% of recent commits change more than 2,000 lines
adequate128 of 2175 commits in the last 24 months changed over 2,000 lines of code, not counting reformatting, renames, vendored or generated code. A change that size is rarely reviewed line by line. Ask how they were reviewed, and what made them that large.
| 128 commits over 2,000 lines |
Product & Engineering Maturity
strongNo finding.
Security & Reliability Posture
adequate1 Dockerfile runs the application as root
adequateNo USER instruction switches away from root, so the process runs with full privileges inside the container. It is a one-line fix and an ordinary expectation, which is why its absence is worth asking about: it usually says more about whether anyone has reviewed the deployment than about this container specifically.
Dockerfile — runs as root |
The build runs third-party code it does not pin
adequate7 third-party CI actions are referenced by a tag or branch rather than a commit, so they run whatever that tag points to on the day; 1 step pipes a download straight into a shell. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small.
.github/workflows/desktop-release.yml:127 — action pinned by tag |
.github/workflows/docker-release.yml:73 — action pinned by tag |
Dockerfile:92 — download piped into a shell |
2 deserialisers that can run code
adequate2 places read data with a deserialiser that executes what it reads (pickle). That is safe on data the system wrote itself and remote code execution on anything else. Ask where each one's input comes from.
deeptutor/runtime/isolated_worker.py:87 — code-executing deserialiser |
deeptutor/runtime/worker_process.py:53 — code-executing deserialiser |
14 locked dependencies have published vulnerabilities, 35 high or critical in what ships
adequate14 of 567 locked dependencies match 81 published advisories in OSV, 35 of them rated high or critical. A lockfile says which version is installed, not whether the flawed code is reachable from this product, so each needs a look. Most are fixed by an upgrade, and the advisory names the version.
web/package-lock.json — next 16.2.3: GHSA-2464-fhr4-w9xw (critical), fixed in 16.4.1 |
web/package-lock.json — brace-expansion 1.1.14: GHSA-3jxr-9vmj-r5cp (high), fixed in 1.1.16 |
web/package-lock.json — brace-expansion 2.1.1: GHSA-3jxr-9vmj-r5cp (high), fixed in 2.1.2 |
4 places insert HTML from a variable without sanitising it
adequate4 places set HTML from a value that is neither a literal nor passed through a sanitiser. Where the value can come from a user, that is stored cross-site scripting, and it is the first thing a buyer's security review looks for in a frontend.
web/components/Mermaid.tsx:176 — HTML from a variable |
web/components/ThemeScript.tsx:59 — HTML from a variable |
web/components/partners/WeixinQrLogin.tsx:142 — HTML from a variable |
2 vendored components with no licence
adequateThird-party code is committed into this repository without any statement of the terms it arrived under. Unknown terms are harder to deal with than inconvenient ones: an awkward licence can be complied with, an absent one cannot. Each of these needs its origin established before the code changes hands.
deeptutor/services/cli_apps/vendor/build_snapshot.py — 1 tracked files, no licence file |
deeptutor/services/mcp/catalog/vendor/curated.json — 1 tracked files, no licence file |
Relicensed: AGPL-3.0 → Apache-2.0 (2026-04-04)
adequateThe root licence changed 1 time(s). Code taken under earlier terms stays under them; check which terms any fork or customer relied on.
7 advisories against this project in the last 24 months, 6 high or critical
adequateThe newest was published on 2026-10-01. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. Whether 6 of them are fixed in the code you ship could not be told from this history: its version is only known to be at least 1.7.1. Answer lives in: the release you run, set against each fixed version.
| 2026-10-01: CVE-2026-51876 (critical): DeepTutor 1.4.0 contains an authorization bypass vulnerability in the book confirmation flow. An unauthenticated or unauthorized caller can reuse a publicly exp |
| 2026-10-01: CVE-2026-51878 (moderate): deeptutor 1.4.0 contains an authorization bypass through a user-controlled object identifier in TurnRuntimeManager.regenerate_last_turn. A remote caller can enu |
| 2026-10-01: CVE-2026-51879 (critical): deeptutor 1.4.0 contains an authorization bypass through a user-controlled object identifier in TutorBotManager.write_bot_file. A remote caller can enumerate bo |
| 2026-10-01: CVE-2026-51880 (critical): deeptutor 1.4.0 contains a path traversal issue in EditFileTool.execute. Through the live tutorbot WebSocket interface, a remote caller can induce the tool laye |
| 2026-10-01: CVE-2026-51881 (critical): deeptutor 1.4.0 contains code injection in ExecTool.execute. Through the live tutorbot WebSocket interface, a remote caller can induce the tool layer to execute |
Observability & Operations
adequateNo structured logging library is in use
adequateNothing references a structured logging library. Logs that are written to be read by a person are not searchable by a machine, which means incident response here is proportional to how well someone remembers the codebase rather than to what the tooling can find.
| searched 4,238 files for 10 structured logging libraries; 0 matched |
An error reporter is installed but never initialised
adequateNothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.
| no error reporter initialised |
2 of 4 deployed images carry no version, or `latest`
adequate2 images in the deployment configuration are named without a version or as `latest`. A redeploy can change the software without a commit, a rollback has nothing to roll back to, and nobody can say from the repository what is running.
docker-compose.yml:51 — image without a version |
docker-compose.ghcr.yml:60 — image without a version |
Fit with the Acquirer
not assessableNot rated: structurally not assessable from a repository.
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The full report on hkuds/deeptutor: every dimension, the questions for the room, and the audit log.
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