CVE-2023-30629

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 43% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(medium)
EPSS
54.9%
KEV
Not listed

Published

April 24, 2023

Last Modified

November 21, 2024

References (10)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
vyper0.3.1 ... 0.3.7 (7 versions)0.3.8—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
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  19. 2026-06-27 23:04 UTCOSV refresh
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  8. 2026-06-19 19:24 UTCEPSS rescore
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  25. 2026-06-10 09:47 UTCOSV refresh
  26. 2026-06-08 14:15 UTCEPSS rescore
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  50. 2026-05-27 13:39 UTCEPSS rescore
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  56. 2026-05-26 07:17 UTCEPSS rescore
  57. 2026-05-25 02:24 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-30629?
CVE-2023-30629 is a high vulnerability published on April 24, 2023. 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 rawcall with revertonfailure=False and maxoutsize=0 receives the wrong response from rawcall. Depending on the…
When was CVE-2023-30629 disclosed?
CVE-2023-30629 was first published in the National Vulnerability Database on April 24, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-30629 actively exploited?
CVE-2023-30629 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 54.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-30629?
CVE-2023-30629 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-30629?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30629, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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