{"cve":"CVE-2023-30629","nvd":{"published":"2023-04-24T22:15:10.030","modified":"2026-06-17T05:55:11.670","status":"Modified","description":"Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions 0.3.1 through 0.3.7, the Vyper compiler generates the wrong bytecode. Any contract that uses the `raw_call` with `revert_on_failure=False` and `max_outsize=0` receives the wrong response from `raw_call`. Depending on the memory garbage, the result can be either `True` or `False`. A patch is available and, as of time of publication, anticipated to be part of Vyper 0.3.8. As a workaround, one may always put  `max_outsize>0`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-670"],"references":["https://docs.vyperlang.org/en/v0.3.7/built-in-functions.html#raw_call","https://github.com/lidofinance/gate-seals/blob/051593e74df01a4131c485b4fda52e691cd4b7d8/contracts/GateSeal.vy#L164","https://github.com/lidofinance/gate-seals/pull/5/files","https://github.com/vyperlang/vyper/commit/851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae","https://github.com/vyperlang/vyper/security/advisories/GHSA-w9g2-3w7p-72g9"],"products":["vyperlang:vyper"],"source":"nvd","synced_at":"2026-10-19T21:38:05.473481323+00:00"},"epss":{"cve":"CVE-2023-30629","score":0.00883,"percentile":0.59203,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w9g2-3w7p-72g9","url":"https://osv.dev/vulnerability/GHSA-w9g2-3w7p-72g9","summary":"Incorrect success value returned in vyper","modified":"2026-09-10T03:50:01.176366652Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":[">=0.3.1 <0.3.8"],"fixed":["0.3.8"]}]},{"id":"PYSEC-2023-131","url":"https://osv.dev/vulnerability/PYSEC-2023-131","summary":"","modified":"2023-11-08T04:12:26.595556Z","packages":[{"ecosystem":"PyPI","name":"vyper","purl":"pkg:pypi/vyper","ranges":[">=0.3.1 <0.3.8"],"fixed":["0.3.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}