GHSA-48m6-486p-9j8p
nimiq-consensus panics via RequestMacroChain micro-block locator
Details
### Impact An unauthenticated p2p peer can cause the `RequestMacroChain` message handler task to panic by sending a `RequestMacroChain` message where the first locator hash that is on the victim’s main chain is a micro block hash (not a macro block hash).
In `RequestMacroChain::handle`, the handler selects the locator based only on "is on main chain", then calls `get_macro_blocks()` and panics via `.unwrap()` when the selected hash is not a macro block (`BlockchainError::BlockIsNotMacro`).
### Patches The patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/pull/3660) is formally released as part of [v1.3.0](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0).
### Workarounds No known workarounds.
Are you affected?
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Affected packages
0No fixed version published yet for nimiq-consensus. Pin to a known-safe version or switch to an alternative.
References
- https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-34069[ADVISORY]
- https://github.com/nimiq/core-rs-albatross/pull/3660[WEB]
- https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac[WEB]
- https://github.com/nimiq/core-rs-albatross[PACKAGE]
- https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0[WEB]