CVE-2026-76781

MediumCVSS 5.5/10Last modified Nov 6, 2026

Description

A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a `nextCatalog` element lacks its mandatory `catalog` attribute, leading to the application crashing and causing a Denial of Service (DoS).

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

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

VendorProductVersions
Red HatRed Hat Hardened Images—
Red HatRed Hat Enterprise Linux 10—
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 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Hardened Images—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 4—
Red HatRed Hat OpenShift Container Platform 5—

References

Timeline

Published
Sep 17, 2026
Last modified
Nov 6, 2026
NVD status
Awaiting Analysis

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CVE-2026-76781: Medium severity, CVSS 5.5 | Vulnix