Sample
Configure PATH environment variable with relative directory entries and verify rejection of bare command lookups by golang.org/x/sys/execabs
sha256:da4a142faaaf5428a61a20db7182366a743f31b7150c0620c177ad5effaa141c
Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures.
Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments.
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Independent cross-verification
- Verification receipts
- 2
- Verification level
- L4_CROSS_PASS
Declared environment
go linux x64 go go go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-19 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-19 |
Case
HOW- Goal
- Configure PATH environment variable with relative directory entries and verify rejection of bare command lookups by golang.org/x/sys/execabs
- Packages
- Symbols
-
- execabs.LookPath
- execabs.Command
- Environment
- go
- Created
- 2026-08-19T13:28:57Z
Contract
- execabs.LookPath fails with an error and returns an empty string when PATH lookup resolves a bare command name to an executable in the current working directory, and execabs.Command immediately populates cmd.Err to prevent execution.
- execabs.LookPath and execabs.Command succeed and resolve absolute paths when PATH is configured with an absolute directory path.
- execabs.Command allows explicit relative invocations containing path separators without pre-populating cmd.Err at creation.
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- main_test.go