CVE-2026-18739CWE-787

CVE-2026-18739

Low · published August 4, 2026

CVSS v3.1
2.5
EPSS
0%
Percentile
3.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.5 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00140 · 3.1th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-04T10:16Z
References (3)
EPSS history
Timeline
  • 04 AUG 05:32Z
    Popt-devel: popt-static: off-by-one in poptstuffargs
    cvelistv5