Omitted Ether transfers via ignored raw_call value
Published Jan 30, 2024 · Updated Jun 16, 2025
Improper input validation in Vyper 0.3.10 and earlier allows attackers to compile contracts that silently omit intended Ether transfers. The RawCall.build_IR method accepts a nonzero value argument with delegatecall or staticcall, although those EVM opcodes cannot transfer value and the compiler discards it. The flaw is reached only when contract source combines raw_call value= with is_delegate_call or is_static_call, producing bytecode whose payment behavior differs from the source and potentially disrupts contract accounting.
Summary
What happened
Improper input validation in Vyper 0.3.10 and earlier allows attackers to compile contracts that silently omit intended Ether transfers. The RawCall.build_IR method accepts a nonzero value argument with delegatecall or staticcall, although those EVM opcodes cannot transfer value and the compiler discards it. The flaw is reached only when contract source combines raw_call value= with is_delegate_call or is_static_call, producing bytecode whose payment behavior differs from the source and potentially disrupts contract accounting.
The record
- CVE
- CVE-2024-24567
- Published
- Jan 30, 2024
- Updated
- Jun 16, 2025
- Vendor
- Vyper
- Product
- Vyper
- Classifications
- CWE-754
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 30, 2024CVE publishedPublication date reported by the CVE source.
- Jun 16, 2025Record 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.
- Affected versionversion=<= 0.3.10
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Vyper raw_call conflicting-argument compiler exampleproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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