Vyper: Memory corruption using function calls within tuples / nested calls
Vyper: Memory corruption using function calls within tuples / nested calls. When performing a function call inside a tuple or as an argument inside another function call, there is a memory corruption issue that occurs because of an incorrect pointer to the the tip of the stack.
Vuln-watch · relayed from the GitHub Advisory Database; see Source & attribution below
Summary
When performing a function call inside a tuple or as an argument inside another function call, there is a memory corruption issue that occurs because of an incorrect pointer to the the tip of the stack.
Affected
- vyper (pip) < 0.2.6 — fixed in 0.2.6
Severity
Medium (CVSS 6.9), as rated by the upstream advisory.
Recommended actions
- Upgrade vyper to 0.2.6 or later
Source & attribution
This 0xCERT advisory summarises GHSA-2r3x-4mrv-mcxf from the GitHub Advisory Database: https://github.com/advisories/GHSA-2r3x-4mrv-mcxf. Details may change; refer to the original source for the authoritative record.
References
- https://github.com/advisories/GHSA-2r3x-4mrv-mcxf
- https://github.com/vyperlang/vyper/security/advisories/GHSA-2r3x-4mrv-mcxf
- https://github.com/vyperlang/vyper/pull/2186
- https://github.com/vyperlang/vyper/commit/74ba67d4bec5f8be4f05759e37d2bfb1463e0441
- https://github.com/vyperlang/vyper/releases/tag/v0.2.6
OpenPGP-signed. The signed text of this advisory verifies against the 0xCERT key CCC7 D9EC 9415 723D.
Published 2026-10-06 · last updated 2026-10-08
curl -s https://www.0xcert.com/pgp.asc | gpg --import && curl -s https://www.0xcert.com/advisory/0xCERT-2026-0187/signed.txt | gpg --verify