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CVE-2026-13762— HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF

Quick assessment

Affected
AWS Amazon CloudFront
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.

AWS Amazon CloudFront是AWS公司的一款内容分发网络云服务。 AWS Amazon CloudFront存在输入验证错误漏洞，该漏洞源于对HTTP/2请求的不一致解释，可能允许远程攻击者通过跨帧拆分请求体来绕过AWS WAF托管规则体检查，导致只检查部分请求体。

CVSS 9.8 · Critical EPSS 0.63% · P48

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS Amazon CloudFront affected
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I. Basic Information for CVE-2026-13762

Vulnerability Information
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Vulnerability Title
HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF
Source: CVE Program / CVE List V5
Vulnerability Description
Inconsistent interpretation of HTTP/2 requests in Amazon CloudFront with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected. This issue was remediated server-side. No customer action is required.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
AWS Amazon CloudFront 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AWS Amazon CloudFront是AWS公司的一款内容分发网络云服务。 AWS Amazon CloudFront存在输入验证错误漏洞，该漏洞源于对HTTP/2请求的不一致解释，可能允许远程攻击者通过跨帧拆分请求体来绕过AWS WAF托管规则体检查，导致只检查部分请求体。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS Amazon CloudFront 0 -

II. Public POCs for CVE-2026-13762

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III. Intelligence Information for CVE-2026-13762

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Vendor Advisories for CVE-2026-13762 (1)

IV. Related Vulnerabilities

Same vendor: AWS
Same weakness: CWE-444

V. Comments for CVE-2026-13762

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