Vulnerability Description
nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, the discovery handler accepts a peer-controlled limit during handshake and stores it unchanged. The immediate HandshakeAck path then honors limit = 0 and returns zero contacts, which makes the session look benign. Later, after the same session reaches Established, the periodic update path computes self.peer_list_limit.unwrap() as usize - 1. With limit = 0, that wraps to usize::MAX and then in rand 0.9.2, choose_multiple() immediately attempts Vec::with_capacity(amount), which deterministically panics with capacity overflow. This issue has been patched in version 1.3.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nimiq | Nimiq Proof-Of-Stake | <= 1.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/nimiq/core-rs-albatross/commit/8f60a2d75b74b55764ecf34bd4435fPatch
- https://github.com/nimiq/core-rs-albatross/pull/3664Patch
- https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0Release Notes
- https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-5rm9-893q-vmVendor Advisory
FAQ
What is CVE-2026-33184?
CVE-2026-33184 is a vulnerability with a CVSS score of 7.5 (HIGH). nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, the discovery handler accepts a peer-controlle...
How severe is CVE-2026-33184?
CVE-2026-33184 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33184?
Check the references section above for vendor advisories and patch information. Affected products include: Nimiq Nimiq Proof-Of-Stake.