CVE-2026-13763
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: ( https://docs.aws.amazon.com/elasticloadbalancing/latest/application/edit-target-group-attributes.html#waf-http2-inspection )
- Published Jun 29, 2026
- CVSS 7.9 high
- 0.7% chance of exploitation in the next 30 days (EPSS)
Affected software
In the news
- CVE-2026-13762 and CVE-2026-13763 - Issue with HTTP/2 multi-frame request body inspection in AWS WAF AWS Security Bulletins ·