diff --git a/src/cli/cliOutputFormatter.ts b/src/cli/cliOutputFormatter.ts
index 2854c72286..cb05a6d822 100644
--- a/src/cli/cliOutputFormatter.ts
+++ b/src/cli/cliOutputFormatter.ts
@@ -66,6 +66,19 @@ const escapeTableCell = (value: string): string =>
     .replace(/[\\|`*[\]~]|_+/g, escapeInlineSyntax)
     .replace(/\r\n|\r|\n/g, "<br>");
 
+/** Heading and paragraph facts are literal data, including block syntax. */
+const escapeMarkdownText = (value: string): string =>
+  escapeTableCell(value)
+    .replace(/#/g, "\\#")
+    .replace(/^(\s*)([-+=])/, "$1\\$2")
+    .replace(/^(\s*\d{1,9})([.)])(?=\s)/, "$1\\$2")
+    .replace(/^[ \t]+/, (indent) =>
+      indent.replace(/ /g, "&#32;").replace(/\t/g, "&#9;"),
+    );
+
+const markdownHeading = (path: readonly string[]): string =>
+  `## ${escapeMarkdownText(path.join("."))}\n\n`;
+
 const renderTable = (
   headers: readonly string[],
   rows: readonly string[][],
@@ -138,13 +151,13 @@ const formatMarkdown = (
 ): string => {
   if (value == null && path.length === 0) return "";
   if (isScalar(value)) {
-    if (path.length === 0) return String(value);
-    return `## ${path.join(".")}\n\n${String(value)}`;
+    if (path.length === 0) return escapeMarkdownText(String(value));
+    return `${markdownHeading(path)}${escapeMarkdownText(String(value))}`;
   }
   if (Array.isArray(value)) {
     if (isObjectArray(value)) {
       const table = formatObjectTable(value);
-      return path.length === 0 ? table : `## ${path.join(".")}\n\n${table}`;
+      return path.length === 0 ? table : `${markdownHeading(path)}${table}`;
     }
     return formatMarkdown(markdownCell(value), path);
   }
@@ -163,8 +176,9 @@ const formatMarkdown = (
   return entries
     .map(([key, child]) => {
       const childPath = [...path, key];
-      const heading = `## ${childPath.join(".")}\n\n`;
-      if (isScalar(child)) return `${heading}${String(child)}`;
+      const heading = markdownHeading(childPath);
+      if (isScalar(child))
+        return `${heading}${escapeMarkdownText(String(child))}`;
       if (isObjectArray(child)) return `${heading}${formatObjectTable(child)}`;
       if (
         typeof child === "object" &&
@@ -176,7 +190,7 @@ const formatMarkdown = (
           ? `${heading}${formatKeyValueTable(nested)}`
           : formatMarkdown(nested, childPath);
       }
-      return `${heading}${markdownCell(child)}`;
+      return `${heading}${escapeMarkdownText(markdownCell(child))}`;
     })
     .join("\n\n");
 };
diff --git a/tests/boundary/cli/cliOutput.test.ts b/tests/boundary/cli/cliOutput.test.ts
index 568b6c3eb7..3c1e84c53a 100644
--- a/tests/boundary/cli/cliOutput.test.ts
+++ b/tests/boundary/cli/cliOutput.test.ts
@@ -35,10 +35,10 @@ describe("CLI output argument boundary", () => {
   });
 
   it("formats arrays of empty objects without column keys as JSON in Markdown", () => {
-    expect(renderCliDocument([{}], "md", false)).toBe("[{}]\n");
-    expect(renderCliDocument([{}, {}], "md", false)).toBe("[{},{}]\n");
+    expect(renderCliDocument([{}], "md", false)).toBe("\\[{}\\]\n");
+    expect(renderCliDocument([{}, {}], "md", false)).toBe("\\[{},{}\\]\n");
     expect(renderCliDocument({ empty: [{}] }, "md", false)).toBe(
-      "## empty\n\n[{}]\n",
+      "## empty\n\n\\[{}\\]\n",
     );
   });
 
diff --git a/tests/boundary/cli/filteredArrayOutput.test.ts b/tests/boundary/cli/filteredArrayOutput.test.ts
index a345449ca4..60dae51548 100644
--- a/tests/boundary/cli/filteredArrayOutput.test.ts
+++ b/tests/boundary/cli/filteredArrayOutput.test.ts
@@ -100,7 +100,7 @@ it("formats arrays of empty objects without columns as JSON in Markdown", async
   const json = await runFilteredCli(value, "json");
   expect(JSON.parse(json)).toEqual(value);
   const markdown = await runFilteredCli(value, "md");
-  expect(markdown).toBe("[{},{}]\n");
+  expect(markdown).toBe("\\[{},{}\\]\n");
 });
 
 it.each(
@@ -375,7 +375,7 @@ it.each(["json", "jsonl", "yaml", "toon", "md"] as const)(
           .split("\n")
           .map((line) => JSON.parse(line)),
       ).toEqual([1, null, null]);
-    else if (format === "md") expect(output).toBe("[1,null,null]\n");
+    else if (format === "md") expect(output).toBe("\\[1,null,null\\]\n");
     else expect(output).toBe(`${Formatter.format(selected, format)}\n`);
     expect(value).toEqual([{ selected: 1 }, {}, { selected: null }]);
   },
diff --git a/tests/boundary/cli/markdownLiteralCells.test.ts b/tests/boundary/cli/markdownLiteralCells.test.ts
index 44271ad030..528ba53928 100644
--- a/tests/boundary/cli/markdownLiteralCells.test.ts
+++ b/tests/boundary/cli/markdownLiteralCells.test.ts
@@ -103,3 +103,56 @@ cliTest(
     ).toEqual(expectedCells);
   },
 );
+
+cliTest(
+  "preserves literal scalar, array, and heading Evidence facts",
+  async ({ cli }) => {
+    const root = await createTestTempDirectory("rea-markdown-literal-text-");
+    const path = join(root, "bundle.json");
+    const literal = "**literal** [source](wrong) <T> &copy;";
+    const heading = "**key**\n# injected";
+    const result = {
+      [heading]: literal,
+      list: [literal],
+      bullet: "- literal",
+      numbered: "1. literal",
+      rule: "---",
+      indented: "    literal\n- next\n# heading",
+      nested: { value: 1 },
+    };
+    const record = createEvidence(
+      undefined,
+      { id: "fixture", name: "Fixture", version: "1" },
+      { operation: "ordinary-json", parameters: {}, result },
+    );
+    await writeFile(path, JSON.stringify(createEvidenceBundle([record])));
+    const base = [
+      "inspect-evidence-bundle",
+      JSON.stringify({ path, detail: "complete" }),
+      "--filter-output",
+      "records.0.normalized_result",
+    ];
+    const markdown = await cli.run({ arguments: [...base, "--format", "md"] });
+    const json = await cli.run({ arguments: [...base, "--json"] });
+    expect(markdown.exitCode, markdown.stderr).toBe(0);
+    expect(json.exitCode, json.stderr).toBe(0);
+    expect(JSON.parse(json.stdout)).toEqual({
+      records: { "0": { normalized_result: result } },
+    });
+    const renderer = await createMarkdownRenderer(root, { linkify: false });
+    for (const document of [
+      markdown.stdout,
+      renderCliDocument(result, "md", false),
+    ]) {
+      const html = renderer.render(document);
+      expect(html).toContain(
+        "**literal** [source](wrong) &lt;T&gt; &amp;copy;",
+      );
+      expect(html).toContain("**key**<br># injected");
+      expect(html).toContain("literal<br>- next<br># heading");
+      expect(html).not.toMatch(/<(?:strong|em|ul|ol|li|T|pre|hr)(?:\s|>)/u);
+      expect(html).not.toContain('href="wrong"');
+      expect(html).not.toContain("<h1");
+    }
+  },
+);