CVE-2026-18739

LowCVSS 2.5/10Last modified Nov 6, 2026

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.

Metrics

CVSS 3.1 2.5/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
rpm-software-managementpopt>= 1.1.1, < *
Red HatRed Hat Hardened Images—
Red HatRed Hat Enterprise Linux 10—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 5—

References

Timeline

Published
Aug 4, 2026
Last modified
Nov 6, 2026
NVD status
Awaiting Analysis

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CVE-2026-18739: Low severity, CVSS 2.5 | Vulnix