{"action":"Upgrade anchor-lang to 1.0.0-rc.2 or later.","affected":[{"fixed":"1.0.0-rc.2","introduced":"1.0.0-rc.1"}],"component":"anchor-lang","cve_ids":[],"ecosystem":"crates.io","exploited":false,"fixed_versions":["1.0.0-rc.2"],"ghsa_id":"GHSA-429q-fhh4-r6hj","id":"tcs_01M5KES6EQRHHW1HZQX2CEHVW4","modified_at":"2026-05-19T20:30:23.692156902Z","published_at":"2026-05-13T15:33:46Z","references":["https://osv.dev/vulnerability/GHSA-429q-fhh4-r6hj","https://github.com/otter-sec/anchor/security/advisories/GHSA-429q-fhh4-r6hj","https://github.com/solana-foundation/anchor/security/advisories/GHSA-429q-fhh4-r6hj","https://github.com/solana-foundation/anchor/pull/3837","https://github.com/solana-foundation/anchor/pull/4139","https://github.com/solana-foundation/anchor/commit/26ef36968a62e28a1f028e7adae4806af30c747d","https://github.com/solana-foundation/anchor","https://rustsec.org/advisories/RUSTSEC-2026-0146.html"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-429q-fhh4-r6hj","url":"https://osv.dev/vulnerability/GHSA-429q-fhh4-r6hj"}],"summary":"Anchor: `InterfaceAccount` allows account substitution between unexpected types"}