#+title: Known gaps

Open weaknesses. Issues on krz/gitbay are public; this page gives the
title and the consequence, not a reproduction. The current list is the
open issues labelled =security=:
https://gitbay.org/krz/gitbay/issues?label=security. The table below is
what the 2026-09-27 review found; remove a row when its issue closes.

* Filed

| Issue | Area             | Gap                                                                   | Severity |
|-------+------------------+-----------------------------------------------------------------------+----------|

* Not filed

| Area  | Gap                                                                                                         | Severity |
|-------+-------------------------------------------------------------------------------------------------------------+----------|
| Audit | The hash chain is unkeyed, so whoever can write the database can edit a row and recompute every later hash; removing the newest audit rows, or writing new rows under their freed ids, needs no recomputing at all. Neither is detectable from the database; only comparing =gitbayd admin audit verify='s last id and hash with the daemon's journal shows it. Rows written by =gitbayd shell= (=ssh.mode = "system"=) and host admin commands have no journal copy, and the refusal caps are per process, so under that mode each connection counts separately | low |
| Access | Grants and parked profile about texts (=profile_about_backfill=) of deleted accounts and organizations, and deploy keys of deleted repositories, left by deletes before #306, are removed on upgrade and the "schema migrated" log line gives the counts. One whose id a later row had already taken is no longer an orphan and stays with that row; on gitbay.org the orphans found (two grants, one deploy key) name ids no later row had taken | low |
| Availability | Under =ssh.mode = "system"= each SSH session is a separate =gitbayd shell= process, so the pack-generation limit (=internal/packlimit=, #262) cannot count SSH clones across sessions; only HTTP and git:// share a budget there | low |
| Availability | Pushes have no concurrency limit; =max_pack_bytes= bounds each one, not how many run at once | medium |
| Availability | =repo download= (SSH, API) runs =git archive= outside the pack limit; only its two-minute deadline and 512 MiB cap bound it | low |
| Availability | An HTTP or git:// client that disconnects while queued for a pack slot keeps its place until =pack_queue_wait= runs out; only SSH notices the disconnect | low |

* Questions an auditor will ask that have no answer yet

| Question                                                  | Status                                   |
|-----------------------------------------------------------+------------------------------------------|
| What is the measured recovery time?                       | 8m43s from the offsite copy to a clone, laptop drill 2026-09-29, no host provisioning (Admin wiki) |
| How many concurrent clones does the host sustain?         | unmeasured (#262)                        |
| Have the collaboration features been used by independent users? | no; one human user, tests only     |