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 )
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://aws.amazon.com/security/security-bulletins/2026-048-aws/ Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.9 · amazonNVD modified 2026-10-25 21:10
Affected (CPE criteria) 1
cpe:2.3:a:amazon:application_load_balancer:-:*:*:*:*:*:*:*