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GHSA-g433-pq76-6cmf

Bug fixes in hpke-rs, hpke-rs-rust-crypto

Also known asRUSTSEC-2026-0069RUSTSEC-2026-0070RUSTSEC-2026-0071RUSTSEC-2026-0072
Published
Feb 13, 2026
Updated
Mar 25, 2026
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed

Blast Radius

2 pkgs affected
🦀hpke-rs🦀hpke-rs-rust-crypto

Real-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 where 0x004D incorrectly resolved to XWingDraft06 instead of XWingDraft06Obsolete.
  • #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

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iohpke-rsall versions0.6.0
🦀crates.iohpke-rs-rust-cryptoall versions0.6.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    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.

  2. 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.

  3. 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.

  4. 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

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](https://github.com/cryspen/hpke-rs/pull/127): Fix `KemAlgorithm::TryFrom<u16>` mapping where `0x004D` incorrectly resolved to `XWingDraft06` instead of `XWingDraft06Obsolete`. - [#123](https://github.com/cryspen/hpke-rs/pull/123): Fix potential overflow in context counter and switch to use u64. - [#128](https://github.com/cryspen/hpke-rs/pull/128): Re
O3 Security · Impact-Aware SCA

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.