nimiq/core-rs-albatross · Security
nimiq-consensus panics via RequestMacroChain micro-block locator
- GHSA ID
- GHSA-48m6-486p-9j8p
- CVE ID
- CVE-2026-34069
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
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.
Workarounds
No known workarounds.
CWEs
- CWE-617 · Reachable Assertion
References
- https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p ↗
- https://github.com/nimiq/core-rs-albatross/pull/3660 ↗
- https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac ↗
- https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-34069 ↗
- https://github.com/advisories/GHSA-48m6-486p-9j8p ↗