High
rpm — security advisory
A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.
- Products
- rpm
- Affected versions
- 4.18.0+dfsg-1, 4.18.0+dfsg-1+deb12u1, 4.18.2+dfsg-1, 4.18.2+dfsg-1.1~exp1, 4.18.2+dfsg-2, 4.18.2+dfsg-2.1, 4.18.2+dfsg-2.1~exp1, 4.19.1.1+dfsg-1, 4.19.1.1+dfsg-1~exp, 4.20.0+dfsg-1, 4.20.0+dfsg-2, 4.20.0+dfsg-3, 4.20.0+dfsg-4, 4.20.1+dfsg-1, 4.20.1+dfsg-2, 4.20.1+dfsg-3, 6.0.0-1, 6.0.0-2, 6.0.1-1, 6.1.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-84838
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 11:48 UTC · Revision 1
Source evidence
A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.
osv:DEBIAN-CVE-2026-84838
rpm
Fixed versions: Not specified
rpm
Fixed versions: Not specified
rpm
Fixed versions: Not specified
Complete source record
{
"id": "c9f6418e16d1c0dcf644e0b85e531e464969d707456909cc077872123fed4c9c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-84838",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-84838",
"summary": "A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.",
"evidence": "osv:DEBIAN-CVE-2026-84838",
"products": [
{
"name": {
"value": "rpm",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.18.0+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.0+dfsg-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.2+dfsg-1.1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.2+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.2+dfsg-2.1",
"evidence": "/affected/0/versions"
},
{
"value": "4.18.2+dfsg-2.1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "4.19.1.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.19.1.1+dfsg-1~exp",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.0+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.0+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.0+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.0+dfsg-4",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.1+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.20.1+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.0.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "rpm",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.20.1+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "6.0.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "6.1.0-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "rpm",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.20.1+dfsg-3",
"evidence": "/affected/2/versions"
},
{
"value": "6.0.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.0.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "6.0.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "6.1.0-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-84838",
"aliases": [
"DEBIAN-CVE-2026-84838"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.18.0+dfsg-1",
"4.18.0+dfsg-1+deb12u1",
"4.18.2+dfsg-1",
"4.18.2+dfsg-1.1~exp1",
"4.18.2+dfsg-2",
"4.18.2+dfsg-2.1",
"4.18.2+dfsg-2.1~exp1",
"4.19.1.1+dfsg-1",
"4.19.1.1+dfsg-1~exp",
"4.20.0+dfsg-1",
"4.20.0+dfsg-2",
"4.20.0+dfsg-3",
"4.20.0+dfsg-4",
"4.20.1+dfsg-1",
"4.20.1+dfsg-2",
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84838.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84838.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84838.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-14T09:47:43.019116495Z",
"provider": "osv",
"upstream": [
"CVE-2026-84838"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-84838"
]
},
"related_cves": [
{
"value": "CVE-2026-84838",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 315363,
"published_at": "2026-09-02T16:17:33.71+00:00"
}