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websafe-kb/07-framework-security/frameworks/nextjs/cases/nextjs-cve-2021-39178.md

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---
title: "XSS in Image Optimization API for Next.js"
system_id: "nextjs"
category: "frameworks"
advisory_mode: "core"
published_date: "2021-09-01T18:24:22Z"
updated_date: "2026-03-13T22:00:20.154452Z"
severity: "low"
exploit_status: "unknown"
source_confidence: "official"
verification_status: "verified-real"
verification_mode: "real"
artifact_mode: "local-fixture"
last_run_id: "nextjs-nextjs--CVE-2021-39178-20260318035635"
target_types:
- "lab-local"
- "lab-public"
- "authorized-third-party"
allow_public_validation: "yes, with ownership or explicit authorization"
authorization_prerequisite: "asset ownership proof or explicit written authorization"
minimal_validation: "read-only probe, controlled payload, reversible test"
aliases:
- "CVE-2021-39178"
- "GHSA-9gr3-7897-pp7m"
affected_versions:
- "introduced=10.0.0, fixed<11.1.1"
fixed_versions:
- "11.1.1"
secure_code_topics:
- "authz-server-side-recheck"
- "proxy-trust-boundary"
- "token-cookie-storage"
- "xss-output-encoding"
primary_source: "https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7m"
---
# XSS in Image Optimization API for Next.js
## 本地实证状态
- 实证状态: `verified-real`
- 实证方式: `real`
- Artifact 模式: `local-fixture`
- 最近运行: `nextjs-nextjs--CVE-2021-39178-20260318035635`
- 浏览器证据: `present`
- Run Bundle: `/Users/x/websafe/06-case-studies/generated-runs/nextjs-nextjs--CVE-2021-39178-20260318035635`
## 事件层
- Canonical ID: `nextjs--CVE-2021-39178`
- 系统: `nextjs`
- 严重度: `low`
- 来源置信度: `official`
- 官方主源: https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7m
- 影响版本: `introduced=10.0.0, fixed<11.1.1`
- 修复版本: `11.1.1`
## 其他来源
- https://nvd.nist.gov/vuln/detail/CVE-2021-39178
- https://github.com/vercel/next.js/pull/28620
- https://github.com/vercel/next.js/commit/7afc97c5744b38bdf36aa7f87625f438224688aa
- https://github.com/vercel/next.js
- https://github.com/vercel/next.js/releases/tag/v11.1.1
## 实验层
- 仅用于自有资产、测试环境或已明确授权目标。
- 允许公网可达目标,但必须满足资产归属或明确授权前提。
- 最小化验证方式: 最小化验证、只读探测、可审计回显、受控注入。
- 若该案例涉及插件、模块或扩展,应同时检查供应链与升级策略。
- 禁止场景: 无归属证明或无明确授权的公网目标;知名公共网站或与测试无关的第三方资产;会造成持久破坏、数据越权下载或不可回滚影响的动作
## 修复示例
- [javascript-typescript:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/javascript-typescript/authz-server-side-recheck.md)
- [nodejs:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/nodejs/authz-server-side-recheck.md)
- [java:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/java/authz-server-side-recheck.md)
- [php:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/php/authz-server-side-recheck.md)
- [python:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/python/authz-server-side-recheck.md)
- [ruby:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/ruby/authz-server-side-recheck.md)
- [csharp:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/csharp/authz-server-side-recheck.md)
- [go:authz-server-side-recheck](/Users/x/websafe/05-defense/secure-code/go/authz-server-side-recheck.md)
- [javascript-typescript:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/javascript-typescript/proxy-trust-boundary.md)
- [nodejs:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/nodejs/proxy-trust-boundary.md)
- [java:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/java/proxy-trust-boundary.md)
- [php:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/php/proxy-trust-boundary.md)
- [python:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/python/proxy-trust-boundary.md)
- [ruby:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/ruby/proxy-trust-boundary.md)
- [csharp:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/csharp/proxy-trust-boundary.md)
- [go:proxy-trust-boundary](/Users/x/websafe/05-defense/secure-code/go/proxy-trust-boundary.md)
- [javascript-typescript:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/javascript-typescript/token-cookie-storage.md)
- [nodejs:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/nodejs/token-cookie-storage.md)
- [java:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/java/token-cookie-storage.md)
- [php:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/php/token-cookie-storage.md)
- [python:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/python/token-cookie-storage.md)
- [ruby:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/ruby/token-cookie-storage.md)
- [csharp:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/csharp/token-cookie-storage.md)
- [go:token-cookie-storage](/Users/x/websafe/05-defense/secure-code/go/token-cookie-storage.md)
- [javascript-typescript:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/javascript-typescript/xss-output-encoding.md)
- [nodejs:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/nodejs/xss-output-encoding.md)
- [java:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/java/xss-output-encoding.md)
- [php:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/php/xss-output-encoding.md)
- [python:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/python/xss-output-encoding.md)
- [ruby:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/ruby/xss-output-encoding.md)
- [csharp:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/csharp/xss-output-encoding.md)
- [go:xss-output-encoding](/Users/x/websafe/05-defense/secure-code/go/xss-output-encoding.md)