CVE-2026-18839 — Popt-devel: popt-static: size_t underflow in singleoptionhelp
An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print…
Published: 2026-08-05 · CVSS: 2.2 · CVSS 3.1
An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7