From 70efae33abfec966f486edee422023e2c6b61456 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Mon, 1 Jun 2026 05:07:27 +0000
Subject: [PATCH] fix(csp): flag object-src wildcard as a high-risk
 misconfiguration
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

object-src * allows unrestricted plugin content (Flash, Java, ActiveX)
that can execute scripts and bypass CSP. It was silently omitted from the
wildcard-directive check, so a policy like:

  default-src 'self'; script-src 'self'; object-src *

scored 20/30 — a perfect CSP score — despite the critical gap.

Adds object-src to wildcardDirectives and a matching test case.

https://claude.ai/code/session_01XNrf9CDh8K2SLvH7U5rPPs
---
 src/rules.ts          | 2 +-
 test/analyzer.test.ts | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/rules.ts b/src/rules.ts
index db5d48c..50c344b 100644
--- a/src/rules.ts
+++ b/src/rules.ts
@@ -113,7 +113,7 @@ export function checkCSP(headers: RawHeaders): HeaderFinding {
   // fetch/navigation directive — not just as the first token of default-src/
   // script-src. img-src/style-src/font-src/media-src are intentionally omitted
   // as a wildcard there is low-risk and commonly legitimate.
-  const wildcardDirectives = ['default-src', 'script-src', 'connect-src', 'form-action', 'frame-src', 'worker-src'];
+  const wildcardDirectives = ['default-src', 'script-src', 'object-src', 'connect-src', 'form-action', 'frame-src', 'worker-src'];
   const wildcarded = wildcardDirectives.filter(d => {
     const sources = extractCspDirective(raw, d);
     return sources !== undefined && sources.includes('*');
diff --git a/test/analyzer.test.ts b/test/analyzer.test.ts
index da35ca9..787a674 100644
--- a/test/analyzer.test.ts
+++ b/test/analyzer.test.ts
@@ -181,6 +181,11 @@ describe('checkCSP', () => {
     expect(r.score).toBe(13);
   });
 
+  it('detects wildcard in object-src', () => {
+    const r = checkCSP({ 'content-security-policy': "default-src 'self'; script-src 'self'; object-src *; form-action 'self'" });
+    expect(r.findings.some(f => /Wildcard.*object-src/i.test(f))).toBe(true);
+  });
+
   it('detects wildcard in form-action', () => {
     const r = checkCSP({ 'content-security-policy': "default-src 'self'; form-action *" });
     expect(r.findings.some(f => /Wildcard.*form-action/i.test(f))).toBe(true);