CVE-2021-48018High· 7.4▾ TwilightStorage corruption due to variables overwritten by re-entrancy locks
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.7 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 22.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.3%
Last analysed / modified upstream
0.3% → 0.4%
When attempting to use the v0.2.14 release, @pandadefi discovered an issue using the @nonreentrant decorator.
Reentrancy protection storage slots get allocated to the same slots as storage variables, leading to the corruption of storage variables when using the @nonreentrant decorator.
This issue was fixed in v0.2.15 in #2391, #2379
Don't use the @nonreentrant decorator in these versions.
vyper >= 0.2.13, < 0.2.15Upgrade to a patched release:
vyper 0.2.15Connected by shared product, vendor, weakness, or advisory.
CVE-2020-37286Medium· 6.5Vyper 0.1.0b4 before 0.3.0 Memory Corruption via Nested Internal Function Calls
CVE-2021-48020Medium· 6.5Vyper before 0.3.0 Memory Corruption via Internal Function Calls in Arrays
CVE-2020-37288Medium· 3.7Vyper: Return inside for loop more than 1 level deep
CVE-2020-37289Low· 3.7Vyper before 0.3.1 Improper Input Validation of uint8 Interface Return Values
CVE-2020-37287Medium· 5.9Vyper before 0.2.6 Call Stack Corruption via Complex Type Function Arguments
CVE-2021-48019Medium· 4.8Vyper before 0.2.9 Incorrect RETURNDATASIZE in create_forwarder_to Proxies