Http4s: Ember HTTP/2 buffers a frame's declared payload before checking SETTINGS_MAX_FRAME_SIZE

Date Sep 15, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product Maven · org.http4s:http4s-ember-core_2.13

CVE CVE-2026-88975

High-risk advisory CVE-2026-88975

Summary

Http4s: Ember HTTP/2 buffers a frame's declared payload before checking SETTINGS_MAX_FRAME_SIZE

Why it matters

GitHub has published a reviewed security advisory for org.http4s:http4s-ember-core_2.13. Prioritize it with other application dependency updates.

Operator check

Check whether org.http4s:http4s-ember-core_2.13 is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

GitHub Advisory GHSA-gq9p-f254-h286 NVD — CVE-2026-88975 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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