GHSA-g433-pq76-6cmf
Bug fixes in hpke-rs, hpke-rs-rust-crypto
Blast Radius
hpke-rs🦀hpke-rs-rust-cryptoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
We publish a GitHub security advisory for any releases whose CHANGELOG includes bug-fixes, and encourage our users to upgrade. The latest releases of the hpke-rs and hpke-rs-rust-crypto crates contain the following bug-fixes:
hpke-rs
- #127: Fix
KemAlgorithm::TryFrom<u16>mapping where0x004Dincorrectly resolved toXWingDraft06instead ofXWingDraft06Obsolete. - #123: Fix potential overflow in context counter and switch to use u64.
- #128: Return errors when trying to use open/seal with export only ciphersuite and when using kdf export with an output that's too long (instead of truncating it)
The issue fixed in #123 was first reported by Nadim Kobeissi. The issues fixed in #127 and #128 were first reported by Scott Arciszewski.
hpke-rs-rust-crypto
- #124: Error out on x25519 0 keys
The issue fixed in #124 was first reported by Nadim Kobeissi.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | hpke-rs | all versions | 0.6.0 |
| 🦀crates.io | hpke-rs-rust-crypto | all versions | 0.6.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for hpke-rs. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update hpke-rs to 0.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-g433-pq76-6cmf is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-g433-pq76-6cmf is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-g433-pq76-6cmf. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-g433-pq76-6cmf in your dependencies?
O3 detects GHSA-g433-pq76-6cmf across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.