Low 2.5Published Sep 1, 2026

CVE-2026-18743Popt-devel: popt-static: short realloc in poptconfigfiletostring

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects rpm-software-management popt and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for rpm-software-management popt

Exploited in the last 30 days

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful exploitation could result in heap metadata corruption, potentially causing the affected process to become unavailable (denial of service).

CVSS: 2.5 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-131
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Sep 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rpm-software-management popt rpm_software_management:popt (from the name)	from 1.11	CNA record
Red Hat Red Hat Hardened Images redhat:hummingbird	from 1.19-11.1.hum1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift	4	CNA record

References

https://access.redhat.com/errata/RHSA-2026:56984vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-18743vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2510809issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.