CVE-2026-18739

Popt-devel: popt-static: off-by-one in poptstuffargs

Published Aug 4, 2026 CVSS 3.1 · 2.5 Low EPSS < 1% KEV · Not listed
Description
A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Redhat openshift Ai
Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
cpe:/a:redhat:enterprise_linux:10
cpe:/a:redhat:enterprise_linux:8
cpe:/a:redhat:enterprise_linux:9
cpe:/a:redhat:openshift:5
cpe:/a:redhat:openshift_ai
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat openshift Ai
Redhat rhel Els
Type Values Removed Values Added
First Time appeared Popt-devel
Popt-devel popt-static
Vendors & Products Popt-devel
Popt-devel popt-static
Type Values Removed Values Added
First Time appeared Redhat openshift
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat openshift
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat openshift
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title popt-devel: popt-static: Off-by-one in poptStuffArgs Popt-devel: popt-static: off-by-one in poptstuffargs
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Type Values Removed Values Added
Description A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.
Title popt-devel: popt-static: Off-by-one in poptStuffArgs
Weaknesses CWE-787
References
Metrics threat_severity

None

cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Low

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 6, 2026, 6:08 PM
Reserved
Aug 3, 2026, 8:48 PM
Status
Awaiting Analysis
Published
Aug 4, 2026, 6:16 AM
Modified
Nov 6, 2026, 7:17 PM
Severity
Low
Public date
Aug 3, 2026, 6:46 PM