diff --git a/src/utils/githubAuth.ts b/src/utils/githubAuth.ts
index 3547349..d14eb2b 100644
--- a/src/utils/githubAuth.ts
+++ b/src/utils/githubAuth.ts
@@ -95,12 +95,16 @@ export const getGitHubAppToken = async () => {
 	return cachedToken.token
 }
 
+export const githubPublicHeaders = {
+	Accept: "application/vnd.github+json",
+	"User-Agent": "hermit",
+	"X-GitHub-Api-Version": "2022-11-28"
+}
+
 export const getGitHubHeaders = async () => {
 	const token = await getGitHubAppToken().catch(() => null)
 	return {
-		Accept: "application/vnd.github+json",
-		"User-Agent": "hermit",
-		"X-GitHub-Api-Version": "2022-11-28",
+		...githubPublicHeaders,
 		...(token ? { Authorization: `Bearer ${token}` } : {})
 	}
 }
diff --git a/src/utils/githubSummary.ts b/src/utils/githubSummary.ts
index 8fb54b5..41fb7f4 100644
--- a/src/utils/githubSummary.ts
+++ b/src/utils/githubSummary.ts
@@ -4,7 +4,7 @@ import {
 	Section,
 	TextDisplay
 } from "@buape/carbon"
-import { getGitHubHeaders } from "./githubAuth.js"
+import { getGitHubHeaders, githubPublicHeaders } from "./githubAuth.js"
 
 const importantClawsweeperLabels = new Set([
 	"clawsweeper:current-main-repro",
@@ -211,6 +211,17 @@ export const parseGitHubIssueUrls = (content: string) => {
 		})
 }
 
+const githubNamePattern = /^[A-Za-z0-9._-]+$/
+
+export const isGitHubRepoName = (value: string) =>
+	githubNamePattern.test(value) && value !== "." && value !== ".."
+
+export const isTrustedGitHubRepo = (owner: string, repo: string) =>
+	isGitHubRepoName(owner) &&
+	isGitHubRepoName(repo) &&
+	owner.toLowerCase() === "openclaw" &&
+	repo.toLowerCase() === "openclaw"
+
 export const getImportantGitHubLabels = (labels: string[]) => {
 	const groups = [
 		labels.filter((label) => label.startsWith("size:")),
@@ -229,9 +240,17 @@ export const fetchGitHubSummaryData = async (
 	repo: string,
 	number: number
 ): Promise<GitHubSummaryData | null> => {
+	if (!isGitHubRepoName(owner) || !isGitHubRepoName(repo)) {
+		return null
+	}
+
+	const headers = isTrustedGitHubRepo(owner, repo)
+		? await getGitHubHeaders()
+		: githubPublicHeaders
+
 	const response = await fetch(
 		`https://api.github.com/repos/${owner}/${repo}/issues/${number}`,
-		{ headers: await getGitHubHeaders() }
+		{ headers }
 	)
 	if (!response.ok) {
 		return null
diff --git a/tests/githubSummary.test.ts b/tests/githubSummary.test.ts
new file mode 100644
index 0000000..0eecc03
--- /dev/null
+++ b/tests/githubSummary.test.ts
@@ -0,0 +1,133 @@
+import { afterEach, describe, expect, it, spyOn } from "bun:test"
+import * as githubAuth from "../src/utils/githubAuth.js"
+import {
+	fetchGitHubSummaryData,
+	isGitHubRepoName,
+	isTrustedGitHubRepo
+} from "../src/utils/githubSummary.js"
+
+const issueJson = {
+	html_url: "https://github.com/openclaw/openclaw/issues/1",
+	number: 1,
+	title: "Example",
+	state: "open",
+	labels: []
+}
+
+const captureFetch = () => {
+	const calls: Array<{ url: string; authorization?: string }> = []
+	const previousFetch = globalThis.fetch
+	globalThis.fetch = (async (input: RequestInfo | URL, init?: RequestInit) => {
+		const headers = new Headers(init?.headers)
+		calls.push({
+			url: String(input),
+			authorization: headers.get("Authorization") ?? undefined
+		})
+		return new Response(JSON.stringify(issueJson), {
+			status: 200,
+			headers: { "Content-Type": "application/json" }
+		})
+	}) as typeof fetch
+	return {
+		calls,
+		restore: () => {
+			globalThis.fetch = previousFetch
+		}
+	}
+}
+
+afterEach(() => {
+	delete process.env.OPENAI_API_KEY
+	delete process.env.GITHUB_APP_ID
+	delete process.env.GITHUB_APP_INSTALLATION_ID
+	delete process.env.GITHUB_APP_PRIVATE_KEY
+})
+
+describe("isGitHubRepoName", () => {
+	it("accepts GitHub owner and repo characters", () => {
+		expect(isGitHubRepoName("openclaw")).toBe(true)
+		expect(isGitHubRepoName("openclaw.ai")).toBe(true)
+		expect(isGitHubRepoName("my_repo-1")).toBe(true)
+	})
+
+	it("rejects path and encoding bypasses", () => {
+		const rejected = [
+			"",
+			".",
+			"..",
+			"foo/bar",
+			"foo\\bar",
+			"foo/../users",
+			"%2e%2e",
+			"%2f",
+			"foo%2fbar",
+			"foo?x=1",
+			"foo#frag",
+			"foo@evil",
+			"https:",
+			"foo bar",
+			"foo\nbar",
+			"foo\rbar",
+			"foo\tbar",
+			"foo/..",
+			"..%2fusers",
+			"／slash",
+			"foo\0bar"
+		]
+		for (const value of rejected) {
+			expect(isGitHubRepoName(value)).toBe(false)
+		}
+	})
+})
+
+describe("isTrustedGitHubRepo", () => {
+	it("trusts only the default installation repo", () => {
+		expect(isTrustedGitHubRepo("openclaw", "openclaw")).toBe(true)
+		expect(isTrustedGitHubRepo("OpenClaw", "OpenClaw")).toBe(true)
+		expect(isTrustedGitHubRepo("openclaw", "hermit")).toBe(false)
+		expect(isTrustedGitHubRepo("octocat", "hello-world")).toBe(false)
+		expect(isTrustedGitHubRepo("openclaw/../x", "openclaw")).toBe(false)
+	})
+})
+
+describe("fetchGitHubSummaryData", () => {
+	it("does not call GitHub when owner or repo can change the API path", async () => {
+		const { calls, restore } = captureFetch()
+		try {
+			expect(await fetchGitHubSummaryData("foo/../users", "me", 1)).toBeNull()
+			expect(await fetchGitHubSummaryData("openclaw", "openclaw/../hermit", 1)).toBeNull()
+			expect(await fetchGitHubSummaryData(".", "openclaw", 1)).toBeNull()
+			expect(await fetchGitHubSummaryData("openclaw", "..", 1)).toBeNull()
+			expect(calls).toEqual([])
+		} finally {
+			restore()
+		}
+	})
+
+	it("uses the App token only for openclaw/openclaw", async () => {
+		const tokenSpy = spyOn(githubAuth, "getGitHubAppToken").mockResolvedValue(
+			"installation-token"
+		)
+		const { calls, restore } = captureFetch()
+		try {
+			const publicData = await fetchGitHubSummaryData("octocat", "hello-world", 1)
+			const trustedData = await fetchGitHubSummaryData("OpenClaw", "openclaw", 42)
+			expect(publicData?.repoName).toBe("octocat/hello-world")
+			expect(trustedData?.number).toBe(1)
+			expect(tokenSpy).toHaveBeenCalledTimes(1)
+			expect(calls).toEqual([
+				{
+					url: "https://api.github.com/repos/octocat/hello-world/issues/1",
+					authorization: undefined
+				},
+				{
+					url: "https://api.github.com/repos/OpenClaw/openclaw/issues/42",
+					authorization: "Bearer installation-token"
+				}
+			])
+		} finally {
+			restore()
+			tokenSpy.mockRestore()
+		}
+	})
+})