Summary
Memory over-allocation in evm-core
Prior to the patch, when executing specific EVM opcodes related
to memory operations that use evm_core::Memory::copy_large, the
crate can over-allocate memory when it is not needed, making it
possible for an attacker to perform denial-of-service attack.
The flaw was corrected in commit 19ade85.
Impact
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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evm-core to 0.26.1 or later; evm-core to 0.25.1 or later; evm-core to 0.24.1 or later; evm-core to 0.23.1 or later; evm-core to 0.21.1 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-773Q-5334-5GF9? GHSA-773Q-5334-5GF9 is a medium-severity security vulnerability in evm-core (rust), affecting versions >= 0.26.0, < 0.26.1. It is fixed in 0.26.1, 0.25.1, 0.24.1, 0.23.1, 0.21.1.
- Which versions of evm-core are affected by GHSA-773Q-5334-5GF9? evm-core (rust) versions >= 0.26.0, < 0.26.1 is affected.
- Is there a fix for GHSA-773Q-5334-5GF9? Yes. GHSA-773Q-5334-5GF9 is fixed in 0.26.1, 0.25.1, 0.24.1, 0.23.1, 0.21.1. Upgrade to this version or later.
- Is GHSA-773Q-5334-5GF9 exploitable, and should I be worried? Whether GHSA-773Q-5334-5GF9 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-773Q-5334-5GF9 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-773Q-5334-5GF9?
- Upgrade
evm-coreto 0.26.1 or later - Upgrade
evm-coreto 0.25.1 or later - Upgrade
evm-coreto 0.24.1 or later - Upgrade
evm-coreto 0.23.1 or later - Upgrade
evm-coreto 0.21.1 or later
- Upgrade