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CVE-2026-118260— Echo: BodyDump captures request and response bodies without size limits in v4

Quick assessment

Affected
labstack echo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Echo 是一个用 Go 编写的 Web 框架。在版本 4.0.0 至 4.16.1 期间，Echo v4 的可选 BodyDump 中间件会在处理器执行之前将整个请求体加载到内存中，并且会在 dump 回调中保留完整的响应体，且未设置任何捕获限制。任何能够访问启用了 BodyDump 的路由的未认证客户端，均可提交超大请求体或诱导生成超大响应体，从而引发重复或并发的内存分配，最终耗尽进程内存。BodyDump 默认未启用；虽然外部请求限制可能降低请求侧的暴露风险，但无法限制响应捕获的规模。该问题已在版本 4.16

CVSS 8.2 · High

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 1

VendorProduct Version RangeStatus
labstack echo >= 4.0.0, < 4.16.1 affected
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I. Basic Information for CVE-2026-118260

Vulnerability Information
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Vulnerability Title
Echo: BodyDump captures request and response bodies without size limits in v4
Source: CVE Program / CVE List V5
Vulnerability Description
Echo is a Go web framework. From 4.0.0 until 4.16.1, Echo v4's opt-in BodyDump middleware reads complete request bodies into memory before handlers run and retains complete response bodies for the dump callback without capture limits. An unauthenticated client that can reach a route using BodyDump can submit large bodies or influence large responses, causing repeated or concurrent allocations that exhaust process memory. BodyDump is not enabled by default, and external request limits may reduce request-side exposure but do not bound response capture. This issue is fixed in 4.16.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
labstack echo >= 4.0.0, < 4.16.1 -

II. Public POCs for CVE-2026-118260

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III. Intelligence Information for CVE-2026-118260

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Other References for CVE-2026-118260 (3)

Same Patch Batch · labstack · 2026-10-28 · 16 CVEs total

CVE-2026-118264 9.1 CRITICAL Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls
CVE-2026-118262 8.2 HIGH Echo: WebSocket proxy can retain connections and handlers after client disconnect
CVE-2026-118261 8.2 HIGH Echo: Decompress permits unbounded gzip expansion in v4
CVE-2026-118650 7.5 HIGH Echo: middleware.Static: `%2F`-encoded path bypasses route/group middleware guarding a sta
CVE-2026-118263 6.3 MEDIUM Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests
CVE-2026-118652 6.1 MEDIUM Echo: Reflected Cross-Site Scripting (XSS) via unsanitized JSONP callback in Context.JSONP
CVE-2026-118656 6.1 MEDIUM Echo: Open Redirect via Control-Character Prefix Defeating sanitizeURI
CVE-2026-118654 5.9 MEDIUM Echo static file middleware route protection bypass via encoded dot-dot traversal
CVE-2026-118655 5.9 MEDIUM Echo: Static Middleware Double-Unescape Path Traversal
CVE-2026-118657 5.9 MEDIUM Echo: HTTPS Redirect and HSTS Bypass via Unconditional Trust of Forwarded Scheme Headers
CVE-2026-118651 5.3 MEDIUM Echo: Reverse Proxy Forwards Attacker-Supplied X-Real-IP to Upstream by Default
CVE-2026-118266 5.3 MEDIUM Echo: CSRF Protection Bypass via MethodOverride Rewriting POST to Safe Method
CVE-2026-118265 5.3 MEDIUM Echo: X-Real-IP extractor trusts the header value instead of the sending peer
CVE-2026-118653 5.3 MEDIUM Echo: Rate Limiter Bypass via Spoofed X-Forwarded-For Header in Default Configuration
CVE-2026-118658 4.7 MEDIUM Echo: Arbitrary Scheme Injection in WWWRedirect/NonWWWRedirect Middlewares via X-Forwarded

IV. Related Vulnerabilities

Same product: echo
Same vendor: labstack
Same weakness: CWE-400