CVE-2024-32645Public exploitNetwork attack vector

Incorrect event topics via unwrapped raw_log values

Published Apr 25, 2024 · Updated Aug 2, 2024

Incorrect code generation in Vyper 0.3.10 and earlier allows attackers to produce wrong event topics via non-literal raw_log values. RawLog.build_IR omits unwrap_location for memory or storage topic expressions, so code generation passes each variable's pointer instead of its value to the EVM log operation. Affected contracts must invoke raw_log with non-literal topics; downstream client applications that rely on those logs can behave unexpectedly.

CVSS severity5.3
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect code generation in Vyper 0.3.10 and earlier allows attackers to produce wrong event topics via non-literal raw_log values. RawLog.build_IR omits unwrap_location for memory or storage topic expressions, so code generation passes each variable's pointer instead of its value to the EVM log operation. Affected contracts must invoke raw_log with non-literal topics; downstream client applications that rely on those logs can behave unexpectedly.

The record

CVE
CVE-2024-32645
Published
Apr 25, 2024
Updated
Aug 2, 2024
Vendor
Vyper
Product
Vyper
Classifications
CWE-20
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.3.10
  2. Affected versionversion=<= 0.3.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vyper · Vyperversion=0 <=0.3.10; version=<= 0.3.10

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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