CVE-2026-18739
Low · 2.5CVSS
2.5
EPSS
0.1%
Published
Aug 4, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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