Skip to content

RUSTSEC-2026-0258: h2 unbounded empty DATA frames #1304

Description

@github-actions

h2 unbounded empty DATA frames

Details
Package h2
Version 0.4.15
URL GHSA-q83h-524g-xf6h
Date 2026-08-17
Patched versions >=0.4.16

The h2 crate, used internally by hyper, had a flaw that would accept and queue empty DATA frames without limit.
If streams were not actively drained, this could lead to unbounded memory usage, or a panic if the length overflows.

Low severity.

Patched in v0.4.16.

See advisory page for additional details.

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Labels

BugSomething isn't workingRustSDK

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions