diff --git a/csaf_2_1/recommendedTests/recommendedTest_6_2_53.js b/csaf_2_1/recommendedTests/recommendedTest_6_2_53.js
new file mode 100644
index 00000000..046a5ed7
--- /dev/null
+++ b/csaf_2_1/recommendedTests/recommendedTest_6_2_53.js
@@ -0,0 +1,85 @@
+import { Ajv } from 'ajv/dist/jtd.js'
+import { entries } from '../../rvisc.js'
+
+const ajv = new Ajv()
+
+/** @type {Array<{ system_name: string; text_pattern: RegExp }>} */
+const registeredIdSystems = entries.map(
+  (/** @type {{ system_name: string; text_pattern: string }} */ entry) => ({
+    system_name: entry.system_name,
+    text_pattern: new RegExp(entry.text_pattern),
+  })
+)
+
+/*
+  This is the jtd schema that needs to match the input document so that the
+  test is activated. If this schema doesn't match it normally means that the input
+  document does not validate against the csaf json schema or optional fields that
+  the test checks are not present.
+ */
+const inputSchema = /** @type {const} */ ({
+  additionalProperties: true,
+
+  properties: {
+    vulnerabilities: {
+      elements: {
+        additionalProperties: true,
+        optionalProperties: {
+          ids: {
+            elements: {
+              additionalProperties: true,
+              optionalProperties: {
+                system_name: { type: 'string' },
+                text: { type: 'string' },
+              },
+            },
+          },
+        },
+      },
+    },
+  },
+})
+
+const validate = ajv.compile(inputSchema)
+
+/** @typedef {import('ajv/dist/jtd.js').JTDDataType<typeof inputSchema>} InputSchema */
+/** @typedef {InputSchema['vulnerabilities'][number]} Vulnerability */
+
+/**
+ * This implements the recommended test 6.2.53 of the CSAF 2.1 standard.
+ *
+ * @param {unknown} doc
+ */
+export function recommendedTest_6_2_53(doc) {
+  const ctx = {
+    warnings:
+      /** @type {Array<{ instancePath: string; message: string }>} */ ([]),
+  }
+
+  if (!validate(doc)) {
+    return ctx
+  }
+
+  /** @type {Array<Vulnerability>} */
+  const vulnerabilities = doc.vulnerabilities
+  vulnerabilities.forEach((vulnerability, vulnIndex) => {
+    const ids = vulnerability.ids ?? []
+    ids.forEach((id, idIndex) => {
+      if (id.system_name === undefined || id.text === undefined) return
+
+      const registeredSystem = registeredIdSystems.find(
+        (entry) => entry.system_name === id.system_name
+      )
+      if (!registeredSystem) return
+
+      if (!registeredSystem.text_pattern.test(id.text)) {
+        ctx.warnings.push({
+          instancePath: `/vulnerabilities/${vulnIndex}/ids/${idIndex}/text`,
+          message: `the text does not match the text_pattern of the registered ID system "${id.system_name}"`,
+        })
+      }
+    })
+  })
+
+  return ctx
+}
diff --git a/package.json b/package.json
index fb931d45..bbc482c6 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
     "mandatoryTests.js",
     "optionalTests.js",
     "README.md",
+    "rvisc.js",
     "schemaTests.js",
     "strip.js",
     "validate.js",
@@ -100,6 +101,10 @@
       "types": "./build/lib/shared/cwec.d.ts",
       "import": "./lib/shared/cwec.js"
     },
+    "./rvisc.js": {
+      "types": "./build/rvisc.d.ts",
+      "import": "./rvisc.js"
+    },
     "./lib/shared/cvss2.js": {
       "types": "./build/lib/shared/cvss2.d.ts",
       "import": "./lib/shared/cvss2.js"
diff --git a/rvisc.js b/rvisc.js
new file mode 100644
index 00000000..cb992c1e
--- /dev/null
+++ b/rvisc.js
@@ -0,0 +1,32 @@
+const rvisc = {
+  $schema:
+    'https://raw.githubusercontent.com/oasis-tcs/csaf/master/registry/id/schema/registry.schema.json',
+  entries: [
+    {
+      common_name: 'OASIS Open CSAF TC GitHub Issues',
+      example_identifiers: ['#1217'],
+      published: '2026-01-28T17:45:00Z',
+      summary:
+        'Contains identifiers for issues in the official standard repository of the OASIS Open CSAF TC.',
+      system_name: 'https://github.com/oasis-tcs/csaf',
+      text_pattern: '^#[1-9]\\d*$',
+      updated: '2026-01-28T17:45:00Z',
+    },
+    {
+      common_name: 'EUVD IDs',
+      example_identifiers: ['EUVD-2026-4660'],
+      published: '2026-01-28T18:00:00Z',
+      summary:
+        'Contains identifiers from the European Vulnerability Database (EUVD).',
+      system_name: 'https://euvd.enisa.europa.eu',
+      text_pattern: '^EUVD-[1-9][0-9]{3}-[0-9]{4,}$',
+      updated: '2026-02-06T15:35:00Z',
+    },
+  ],
+  last_updated: '2026-02-06T15:35:00Z',
+  registry_version: 1,
+}
+
+export default rvisc
+
+export const entries = rvisc.entries
diff --git a/scripts/rvisc-importRegistry.js b/scripts/rvisc-importRegistry.js
new file mode 100644
index 00000000..0ebf8464
--- /dev/null
+++ b/scripts/rvisc-importRegistry.js
@@ -0,0 +1,32 @@
+#!/usr/bin/env node
+
+import { writeFile, readFile } from 'node:fs/promises'
+import prettier from 'prettier'
+
+/**
+ * Converts the RVISC registry (`csaf/registry/id/registry.json`, part of
+ * the `csaf/` git subtree and excluded from the npm package) into a plain
+ * ESM module (`rvisc.js`) that works in Node and in the browser.
+ *
+ * Run again after `csaf/registry/id/registry.json` was updated:
+ *
+ *   node scripts/rvisc-importRegistry.js
+ */
+
+const REGISTRY_FILE = 'csaf/registry/id/registry.json'
+const OUTPUT_FILE = 'rvisc.js'
+
+const json = JSON.parse(await readFile(REGISTRY_FILE, 'utf-8'))
+
+await writeFile(
+  OUTPUT_FILE,
+  prettier.format(
+    `const rvisc = (${JSON.stringify(
+      json
+    )})\n\nexport default rvisc\n\nexport const entries = rvisc.entries`,
+    {
+      ...(await prettier.resolveConfig(OUTPUT_FILE)),
+      filepath: OUTPUT_FILE,
+    }
+  )
+)
diff --git a/tests/csaf_2_1/recommendedTest_6_2_53.js b/tests/csaf_2_1/recommendedTest_6_2_53.js
new file mode 100644
index 00000000..4aaa3c59
--- /dev/null
+++ b/tests/csaf_2_1/recommendedTest_6_2_53.js
@@ -0,0 +1,46 @@
+import assert from 'node:assert/strict'
+import { recommendedTest_6_2_53 } from '../../csaf_2_1/recommendedTests/recommendedTest_6_2_53.js'
+
+describe('recommendedTest_6_2_53', function () {
+  it('only runs on relevant documents', function () {
+    assert.equal(recommendedTest_6_2_53({}).warnings.length, 0)
+  })
+
+  it('does not warn when ids are absent', function () {
+    assert.equal(
+      recommendedTest_6_2_53({ vulnerabilities: [{}] }).warnings.length,
+      0
+    )
+  })
+
+  it('does not warn when text is absent', function () {
+    assert.equal(
+      recommendedTest_6_2_53({
+        vulnerabilities: [
+          {
+            ids: [{ system_name: 'https://example.com' }],
+          },
+        ],
+      }).warnings.length,
+      0
+    )
+  })
+
+  it('does not warn when system_name is not in the registry', function () {
+    assert.equal(
+      recommendedTest_6_2_53({
+        vulnerabilities: [
+          {
+            ids: [
+              {
+                system_name: 'https://unknown-system.example.com',
+                text: 'some-text',
+              },
+            ],
+          },
+        ],
+      }).warnings.length,
+      0
+    )
+  })
+})