RUSTSEC-2026-0258: h2 unbounded empty DATA frames
Nobody has claimed this yet.
Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 55/100
Research direction
Start by checking the dependency declarations and lockfile for h2 version 0.4.15, then review the linked RustSec advisory for the affected behavior. Done means resolving h2 at version 0.4.16 or newer and confirming the project still builds and its available checks pass.
Written by the indexing model from the issue text.
Description
h2 unbounded empty DATA frames
| Details | |
|---|---|
| Package | h2 |
| Version | 0.4.15 |
| URL | https://github.com/hyperium/hyper/security/advisories/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.
- Dominant language
- Rust
- Stars
- 1
- Forks
- 0
- Avg merge
- 3h 48m
- Merged PRs (30d)
- 3
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Similar issues
-
Difficulty 2/5 1-3 hours Newbie friendliness 88/100
-
bug core
Difficulty 2/5 1-3 hours Newbie friendliness 86/100
-
JIT-compiled number -> Decimal conversion silently overflows instead of raising DECIMAL_OVERFLOW Openfuzz
Difficulty 2/5 1-3 hours Newbie friendliness 82/100
ClickHouse/ClickHouse#122114 ·
-
Difficulty 1/5 Under an hour Newbie friendliness 92/100
linebender/vello_svg#90 ·
-
Difficulty 2/5 1-3 hours Newbie friendliness 74/100