CVE-2025-29072 Nethermind Juno Potential Denial of Service (DoS) via Integer Overflow
Remote attackers can cause denial of service in Starknet full nodes via integer overflow in Sierra bytecode decompression, requiring an upgrade to the affected library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-29072?
CVE-2025-29072 is a high-severity vulnerability in n/a, published on 27 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An integer overflow in Nethermind Juno before v.12.05 within the Sierra bytecode decompression logic within the "cairo-lang-starknet-classes" library could allow remote attackers to trigger an infinite loop (and high CPU usage) by submitting a malicious Declare v2/v3 transaction. This results in a denial-of-service condition for affected Starknet full-node implementations.
Weakness: CWE-190
Which versions are affected by CVE-2025-29072?
3 open source packages ship an affected version, including github.com/NethermindEth/juno. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/NethermindEth/juno Go | All versions | 0.12.5 |
github.com/NethermindEth/juno Go | All versions | 0.12.5 |
github.com/NethermindEth/juno Go | All versions | 0.12.5 |
Products include Nethermind Juno.
How do I fix CVE-2025-29072?
Upgrade github.com/NethermindEth/juno to 0.12.5 or later.
Is CVE-2025-29072 being exploited?
There is no known exploitation of CVE-2025-29072 in the wild and no public exploit code.
Sources
Also known as GHSA-wq32-8rp4-w2mc, GO-2025-3583.