Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
rpm-software-management popt — Popt-devel: popt-static: off-by-one in poptstuffargs
AV AC PR UI S C I A CVSS EPSS %ile KEV
L H L N U N N L 2.5 .0009 0.7 —
AFFECTED
Product Versions Fixed
popt 1.1.1 – —
Red Hat Hardened Images unspecified 1.19-11.1.hum1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Aug 3 Reserved by redhat
Aug 4 Published (CNA: redhat)
Aug 18 PATCH SHIPPED — CVE-2026-18739 (rpm-software-management popt). Fixed in Red Hat Hardened Images 1.19-11.1.hum1.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 3, 2026 | Reserved | Reserved by redhat |
| August 4, 2026 | Published | Published (CNA: redhat) |
| August 18, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-18739 (rpm-software-management popt). Fixed in Red Hat Hardened Images 1.19-11.1.hum1. |
Affected
Affected products and packages — 8 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| rpm-software-management | popt | — | 1.1.1 | — |
| Red Hat | Red Hat Hardened Images | — | — | 1.19-11.1.hum1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-18739 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.