Summary
Incorrect Comparison in Vyper
Impact
bytestrings can have dirty bytes in them, resulting in the word-for-word comparison to give incorrect results, e.g.
b1: Bytes[32] = b"abcdef"
b1 = slice(b1, 0, 1)
b2: Bytes[32] = b"abcdef"
t: bool = b1 == b2 # incorrectly evaluates to True
even without dirty nonzero bytes, because there is no comparison of the length, two bytestrings can compare to equal if one ends with "\x00".
b1: Bytes[32] = b"abc\0"
b2: Bytes[32] = b"abc"
t: bool = b1 == b2 # incorrectly evaluates to True
GHSA-7VRM-3JC8-5WWM has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.3.2); upgrading removes the vulnerable code path.
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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Frequently Asked Questions
- What is GHSA-7VRM-3JC8-5WWM? GHSA-7VRM-3JC8-5WWM is a high-severity security vulnerability in vyper (pip), affecting versions < 0.3.2. It is fixed in 0.3.2.
- How severe is GHSA-7VRM-3JC8-5WWM? GHSA-7VRM-3JC8-5WWM has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of vyper are affected by GHSA-7VRM-3JC8-5WWM? vyper (pip) versions < 0.3.2 is affected.
- Is there a fix for GHSA-7VRM-3JC8-5WWM? Yes. GHSA-7VRM-3JC8-5WWM is fixed in 0.3.2. Upgrade to this version or later.
- Is GHSA-7VRM-3JC8-5WWM exploitable, and should I be worried? Whether GHSA-7VRM-3JC8-5WWM 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-7VRM-3JC8-5WWM 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-7VRM-3JC8-5WWM? Upgrade
vyperto 0.3.2 or later.