HighFix available
zsh — security advisory
Zsh before version 5.4.2-test-1 is vulnerable to a buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.
- Products
- zsh
- Affected versions
- Not specified
- Fixed versions
- 5.2-r2, 5.2-r4, 5.3.1-r1, 5.4.2-r1
- CVEs
- CVE-2018-1083
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:56 UTC · Revision 1
Source evidence
Zsh before version 5.4.2-test-1 is vulnerable to a buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.
osv:ALPINE-CVE-2018-1083
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.2-r2
zsh
Fixed versions: 5.2-r4
zsh
Fixed versions: 5.3.1-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
zsh
Fixed versions: 5.4.2-r1
Complete source record
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],
"modified": "2026-10-23T17:17:55.198892815Z",
"provider": "osv",
"upstream": [
"CVE-2018-1083"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-1083"
]
},
"related_cves": [
{
"value": "CVE-2018-1083",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 414962,
"published_at": "2018-03-28T13:29:00.213+00:00"
}