CVE-2025-24800 Critical vulnerability in `ismp-grandpa` <v15.0.1
A flaw in the ismp-grandpa crate allows attackers to forge finality proofs, potentially stealing funds or compromising cross-chain applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-24800?
CVE-2025-24800 is a critical vulnerability in polytope-labs hyperbridge, published on 28 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. A critical vulnerability was discovered in the ismp-grandpa crate, that allowed a malicious prover easily convince the verifier of the finality of arbitrary headers. This could be used to steal funds or compromise other kinds of cross-chain applications. This vulnerability is fixed in 15.0.1.
Which versions are affected by CVE-2025-24800?
6 open source packages ship an affected version, including grandpa-verifier, grandpa-verifier-primitives and ismp-grandpa.
| Package | Affected | Fixed in |
|---|---|---|
grandpa-verifier crates.io | All versions | 0.1.2 |
grandpa-verifier crates.io | All versions | 0.1.2 |
grandpa-verifier-primitives crates.io | All versions | 0.1.2 |
grandpa-verifier-primitives crates.io | All versions | 0.1.2 |
ismp-grandpa crates.io | All versions | 15.0.1 |
ismp-grandpa crates.io | All versions | 15.0.1 |
How do I fix CVE-2025-24800?
Upgrade grandpa-verifier to 0.1.2 or later.
Is CVE-2025-24800 being exploited?
There is no known exploitation of CVE-2025-24800 in the wild and no public exploit code.
Sources
Also known as GHSA-wwx5-gpgr-vxr7.