Vim is an open source, command line text editor. Prior to version 9.2.0561, the Python omni-completion script in python3complete.vim for Vim with the +python3 interpreter enabled (and the legacy pythoncomplete.vim for builds with the +python interpreter) executes the import and from statements found in the current buffer through Python's import machinery. Because the buffer's working directory is on sys.path, opening a hostile .py file with a sibling Python package and invoking omni-completion runs that package's top-level code as the editing user. This issue has been patched in version 9.2.0561.
{
"cwe_ids": [
"CWE-829",
"CWE-94",
"CWE-95"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52858.json",
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:*",
"source": [
"AFFECTED_FIELD",
"CPE_RANGE",
"REFERENCES"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "9.2.0561"
}
]
}"2026-07-30T14:09:00Z"
[
{
"signature_type": "Line",
"target": {
"file": "src/version.c"
},
"deprecated": false,
"source": "https://github.com/vim/vim/commit/4b850457e12e1a678dd209f2868154f7553cbf8d",
"id": "CVE-2026-52858-6a70543e",
"signature_version": "v1",
"digest": {
"line_hashes": [
"146200493773228420153804765641940418619",
"134248039845033759497005491164250093405",
"335706568337545417106131418123687565601",
"210231220889893108690386168716196017542"
],
"threshold": 0.9
}
}
]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52858.json"