RUSTSEC-2026-0258None▾ Sunlith2 unbounded empty DATA frames
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
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.
h2 >= 0.0.0-0, < 0.4.16Upgrade to a patched release:
h2 0.4.16Connected by shared product, vendor, weakness, or advisory.