Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-13763 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-06-29 |
| Vendor | — |
| Product | — |
| CVSS Score | 9.8 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
Inconsistent interpretation of HTTP/2 requests in AWS Application Load Balancer 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 only impacts HTTP/2 ALB target groups.
To remediate this issue, customers should enable the “Inspect after sufficient data” target group configuration associated to an ALB load balancer. Refer to: …
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects the software identified in the CVE description. Check if your organization uses this software and requires updates.
Sources
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