CVE-2026-34069
MEDIUM EPSS 21.3%
Published Apr 14, 20262mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
Description
nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the first locator hash on the victim’s main chain is a micro block hash (not a macro block hash) causes said panic. The RequestMacroChain::handle 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). This issue has been fixed in version 1.3.0.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low
Threat Intelligence
EPSS Exploit Probability
21.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-617
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| nimiq | nimiq_proof-of-stake | * | <1.3.0 |
References 4
- github.com https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac
- github.com https://github.com/nimiq/core-rs-albatross/pull/3660
- github.com https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0
- github.com https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p
Remediation
- github.com https://github.com/nimiq/core-rs-albatross/commit/ae6c1e92342e72f80fd12accbe66ee80dd6802ac
- github.com https://github.com/nimiq/core-rs-albatross/pull/3660
- github.com https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-48m6-486p-9j8p