diff --git a/.planning/phases/14.2.1-translate-plugin/14.2.1-SECURITY-REVIEW.md b/.planning/phases/14.2.1-translate-plugin/14.2.1-SECURITY-REVIEW.md
index 116bcf6..277a77b 100644
--- a/.planning/phases/14.2.1-translate-plugin/14.2.1-SECURITY-REVIEW.md
+++ b/.planning/phases/14.2.1-translate-plugin/14.2.1-SECURITY-REVIEW.md
@@ -2,26 +2,26 @@
 phase: 14.2.1
 slug: translate-plugin
 status: verified
-threats_total: 19
-threats_closed: 19
+threats_total: 24
+threats_closed: 24
 threats_open: 0
 accepted_risks: 0
 asvs_level: 1
 created: 2026-10-06
 verified: 2026-10-06
-reviewer: gsd-executor (14.2.1-04 Task 3, self-performed -- see Reviewer Note)
+reviewer: gsd-executor (14.2.1-04 Task 3 and 14.2.1-06 Task 3, self-performed -- see Reviewer Note)
 ---
 
 # Phase 14.2.1 — Security Review
 
 > Lean Translate plugin (`sm-translate-plugin`), cabana `markdown`/`mltext`/`mlmarkdown`,
 > surf `LocaleResolver`, and the proof-host boot of user+translate. Every
-> T-14.2.1 threat locked in plans 01–04 is mapped below to executed, named Go
+> T-14.2.1 threat locked in plans 01–04 and 06 is mapped below to executed, named Go
 > or Vitest evidence. Unmapped IDs would be a review gap, not an accepted
 > risk; none exist.
 
 **Date:** 2026-10-06
-**Scope:** Plans 14.2.1-01 through 14.2.1-04; `sm-translate-plugin`;
+**Scope:** Plans 14.2.1-01 through 14.2.1-06; `sm-translate-plugin`;
 `summercms.go` modules `cabana` and `surf` plus admin SPA ML/markdown
 controls; proof host `sm-grzybyfunkcjonalne-app`.
 **Repos grepped:** `sm-translate-plugin`, `summercms.go` (excluding
@@ -32,8 +32,9 @@ controls; proof host `sm-grzybyfunkcjonalne-app`.
 14.2.1-04-PLAN.md Task 3 calls for an independent `gsd-security-auditor`
 agent pass. This Cursor session has no dedicated security-auditor subagent
 (same fallback as Phase 08): the 14.2.1-04 executor performed the review
-directly. Every high threat below is closed with source citations and named
-tests **re-executed during this review** (2026-10-06), not merely inherited
+directly, and 14.2.1-06 Task 3 appended CR-01/WR-02 rows the same way. Every
+high threat below is closed with source citations and named tests
+**re-executed during this review** (2026-10-06), not merely inherited
 from earlier plans. The executor checkpoint return states this plainly.
 
 No external API integration: this phase ports a compiled plugin and local
@@ -43,7 +44,7 @@ framework/host contracts only.
 
 ## Verdict Summary
 
-The register contains **19 total threats: 19 closed, 0 open, 0 accepted
+The register contains **24 total threats: 24 closed, 0 open, 0 accepted
 risks**. High findings block phase completion; all high rows are mitigate
 with executed named tests. PHP pin SHA `725d547ec839f02b5fdc0f0a6faaed601a414d50`
 is unchanged.
@@ -85,6 +86,11 @@ is unchanged.
 | T-14.2.1-16 | Tampering | migration rollback | medium | mitigate | `TestTranslateMigrationsRollbackAndRemigrate` dedicated Postgres |
 | T-14.2.1-17 | Tampering | generated admin artifacts | medium | mitigate | `TestMLOpenAPIConformance`; `scripts/check-admin-openapi.sh --check`; `scripts/check-admin-dist.sh` |
 | T-14.2.1-18 | Elevation of Privilege | test fixture | high | mitigate | `TestTranslateEndToEndFixtureAbsentFromProduction`; host `plugins.gen.go` has no `acme.fixture` |
+| T-14.2.1-19 | Information Disclosure | hydrateMLRecord / ShowChild | high | mitigate | `modules/cabana/field_ml.go` hydrates only declared ML fields on Show/save and child record payloads; `TestMLHydration`; `TestRelationChildMLNestedSave` |
+| T-14.2.1-20 | Information Disclosure | FormMeta.EnabledLocales | medium | mitigate | `modules/cabana/http.go` copies locales only on protect()'d form/relation schemas; `admin/tests/form/formState.test.ts` seeds en+pl; `admin/tests/form/MLFields.test.ts` create-empty |
+| T-14.2.1-21 | Tampering | FormView.adopt | medium | mitigate | `mergeMLValue` applies only to ML fields; `admin/tests/form/formState.test.ts` GET-string merge; `admin/tests/form/MLFields.test.ts` sibling locales |
+| T-14.2.1-22 | Tampering | fillChild / CreateChild / UpdateChild | high | mitigate | `liftMLValues` before `projectOperation`; `TestRelationChildMLNestedSave` (de 422, no row) |
+| T-14.2.1-23 | Elevation of Privilege | RelationService.writer | high | mitigate | `http.go` `relations()` Lookup on existing protect()'d child routes; apply after loadParent/loadChild and child PK; `TestRelationChildMLNestedSave` |
 | T-14.2.1-SC | Tampering | package installs | high | mitigate | no `go get` / npm install this plan; plugin `replace` of `sm-user-plugin` is a sibling checkout; framework `go.mod`/`admin/package-lock.json` unchanged |
 
 ---
@@ -199,6 +205,36 @@ is unchanged.
 - **Test evidence (re-run 2026-10-06):** `TestTranslateEndToEndFixtureAbsentFromProduction` matched by `TestTranslateEndToEnd*` in the plugin `./...` run PASS; host `plugins.gen.go` lists only `golem15.user` and `golem15.translate`.
 - **Disposition:** closed / mitigate.
 
+### T-14.2.1-19 — ML hydration disclosure
+
+- **Source:** `modules/cabana/field_ml.go` `hydrateMLRecord` walks declared `mltext`/`mlmarkdown` fields only; list projection never calls it; `TranslatedExact` skips D-11 so missing pl stays empty. ShowChild uses the same helper after `loadParent`/`loadChild`.
+- **Test evidence (re-run 2026-10-06):** `TestMLHydration` PASS (english-only pl is `""`); `TestRelationChildMLNestedSave` PASS (create/update/show hydrated maps).
+- **Disposition:** closed / mitigate.
+
+### T-14.2.1-20 — enabled locale list on schemas
+
+- **Source:** `modules/cabana/http.go` `enabledContentLocales` after Lookup, copied onto protect()'d form and relation schema meta; `FormMeta.EnabledLocales` is `json:"enabledLocales,omitempty"` so list Meta omits it.
+- **Test evidence (re-run 2026-10-06):** `admin/tests/form/formState.test.ts` `seeds every enabled locale as an empty string`; `admin/tests/form/MLFields.test.ts` create-empty selectors list en+pl.
+- **Disposition:** closed / mitigate.
+
+### T-14.2.1-21 — adopt merge of GET scalars
+
+- **Source:** `admin/src/components/form/formState.ts` `mergeMLValue` overlays a host string onto the seed for ML fields only; password fields still clear.
+- **Test evidence (re-run 2026-10-06):** `admin/tests/form/formState.test.ts` `merges a GET host string onto the seed without dropping sibling locales`; `admin/tests/form/MLFields.test.ts` GET-string cases for mltext and mlmarkdown.
+- **Disposition:** closed / mitigate.
+
+### T-14.2.1-22 — relation-child nested ML tampering
+
+- **Source:** `modules/cabana/relation_child.go` `CreateChild`/`UpdateChild` call `liftMLValues` on the child form before `fillChild`/`projectOperation`; undeclared locale, non-string, missing default, and nil writer with a nested map are 422 before Fill.
+- **Test evidence (re-run 2026-10-06):** `TestRelationChildMLNestedSave` PASS (create+update persist en/pl; locale `de` is 422 and inserts no row).
+- **Disposition:** closed / mitigate.
+
+### T-14.2.1-23 — RelationService writer privilege
+
+- **Source:** `modules/cabana/http.go` `relations()` Lookup of `TranslationWriter` matches `crud()`; no new HTTP route; `applyMLTranslations` runs after `loadParent`/`loadChild` and after the child row has a primary key.
+- **Test evidence (re-run 2026-10-06):** `TestRelationChildMLNestedSave` PASS; `recordingWriter.WriteTranslated` refuses a zero PK.
+- **Disposition:** closed / mitigate.
+
 ### T-14.2.1-SC — package installs
 
 - **Source:** no new module versions beyond existing stack pins; plugin `replace` of `sm-user-plugin` points at the host submodule checkout; `gocloud.dev v0.46.0` is the already-decided blob pin. Framework `go.mod` / `admin/package-lock.json` were not changed in this phase.
diff --git a/admin/tests/form/MLFields.test.ts b/admin/tests/form/MLFields.test.ts
index ac9fce3..142d0a6 100644
--- a/admin/tests/form/MLFields.test.ts
+++ b/admin/tests/form/MLFields.test.ts
@@ -61,6 +61,35 @@ describe('ML field registry and nested save body', () => {
     })
   })
 
+  it('sends every enabled locale including empty pl', () => {
+    const fields = [field('mltext'), field('mlmarkdown', 'body')]
+    const payload = editablePayload(fields, {
+      title: { en: 'Hello', pl: '' },
+      body: { en: '# Hi', pl: '' },
+    })
+    expect(payload).toEqual({
+      title: { en: 'Hello', pl: '' },
+      body: { en: '# Hi', pl: '' },
+    })
+  })
+
+  it('exposes one locale selector per ML field listing enabled locales', () => {
+    const title = mlMount(MLTextField, {
+      field: field('mltext'),
+      modelValue: { en: '', pl: '' },
+      controlId: 'f-title',
+    })
+    const body = mlMount(MLMarkdownField, {
+      field: field('mlmarkdown', 'body'),
+      modelValue: { en: '', pl: '' },
+      controlId: 'f-body',
+    })
+    expect(title.findAll('[data-ml-locale]')).toHaveLength(1)
+    expect(body.findAll('[data-ml-locale]')).toHaveLength(1)
+    expect(title.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
+    expect(body.findAll('[data-ml-locale] option').map((node) => node.text())).toEqual(['en', 'pl'])
+  })
+
   it('edits the active locale and copies from another', async () => {
     const wrapper = mlMount(MLTextField, {
       field: field('mltext'),
diff --git a/admin/tests/form/MarkdownField.test.ts b/admin/tests/form/MarkdownField.test.ts
index d2459e0..ae28e21 100644
--- a/admin/tests/form/MarkdownField.test.ts
+++ b/admin/tests/form/MarkdownField.test.ts
@@ -1,8 +1,10 @@
 import { afterEach, beforeEach, describe, expect, it } from 'vitest'
 import { enableAutoUnmount, mount } from '@vue/test-utils'
+import { ref } from 'vue'
 import type { FormField } from '../../src/api/types'
 import MarkdownField from '../../src/components/form/fields/MarkdownField.vue'
 import MLMarkdownField from '../../src/components/form/fields/MLMarkdownField.vue'
+import { FORM_ENABLED_LOCALES } from '../../src/components/form/formContext'
 import { resetState } from '../helpers'
 
 function field(type = 'markdown', name = 'body'): FormField {
@@ -64,6 +66,11 @@ describe('MarkdownField composition and sinks', () => {
         controlId: 'f-body',
       },
       attachTo: document.body,
+      global: {
+        provide: {
+          [FORM_ENABLED_LOCALES as symbol]: ref(['en', 'pl']),
+        },
+      },
     })
     expect(wrapper.findComponent(MarkdownField).exists()).toBe(true)
     await wrapper.find('[data-ml-locale]').setValue('pl')
diff --git a/scripts/check-phase14.2.1.sh b/scripts/check-phase14.2.1.sh
index 078f820..4bda293 100755
--- a/scripts/check-phase14.2.1.sh
+++ b/scripts/check-phase14.2.1.sh
@@ -41,6 +41,8 @@ FRAMEWORK_REQUIRE=(
 	TestML
 	TestMLFieldTypes
 	TestMLNestedSave
+	TestMLHydration
+	TestRelationChildMLNestedSave
 	TestMarkdownRejectsUnsafeHTML
 	TestMLOpenAPIConformance
 )
@@ -48,13 +50,15 @@ HOST_REQUIRE=(TestBootUserTranslate)
 HIGH_THREATS=(
 	T-14.2.1-01 T-14.2.1-02 T-14.2.1-04 T-14.2.1-05 T-14.2.1-06
 	T-14.2.1-07 T-14.2.1-09 T-14.2.1-10 T-14.2.1-11 T-14.2.1-12
-	T-14.2.1-14 T-14.2.1-15 T-14.2.1-18 T-14.2.1-SC
+	T-14.2.1-14 T-14.2.1-15 T-14.2.1-18 T-14.2.1-19 T-14.2.1-22
+	T-14.2.1-23 T-14.2.1-SC
 )
 ALL_THREATS=(
 	T-14.2.1-01 T-14.2.1-02 T-14.2.1-03 T-14.2.1-04 T-14.2.1-05
 	T-14.2.1-06 T-14.2.1-07 T-14.2.1-08 T-14.2.1-09 T-14.2.1-10
 	T-14.2.1-11 T-14.2.1-12 T-14.2.1-13 T-14.2.1-14 T-14.2.1-15
-	T-14.2.1-16 T-14.2.1-17 T-14.2.1-18 T-14.2.1-SC
+	T-14.2.1-16 T-14.2.1-17 T-14.2.1-18 T-14.2.1-19 T-14.2.1-20
+	T-14.2.1-21 T-14.2.1-22 T-14.2.1-23 T-14.2.1-SC
 )
 
 usage() {