Riskcovery

CVE-2026-76781

Libxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute

State
Published
Severity
5.5 Medium
Published
Sep 17, 2026
Updated
Oct 30, 2026
Reserved
Aug 19, 2026

Read the record on cve.org

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).

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hredhat

Weaknesses

Affected Products

ProductVersions
Red Hat Hardened ImagesRed Hat
  • 2.15.3-0.1.3.hum1 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
    Red Hat Enterprise Linux 10Red Hat
      Red Hat Enterprise Linux 6Red Hat
        Red Hat Enterprise Linux 7Red Hat
          Red Hat Enterprise Linux 8Red Hat
            Red Hat Enterprise Linux 8Red Hat
              Red Hat Enterprise Linux 8Red Hat
                Red Hat Enterprise Linux 9Red Hat
                  Red Hat Enterprise Linux 9Red Hat
                    Red Hat Hardened ImagesRed Hat
                      Red Hat OpenShift Container Platform 4Red Hat
                        Red Hat OpenShift Container Platform 4Red Hat
                          Red Hat OpenShift Container Platform 4Red Hat
                            Red Hat OpenShift Container Platform 5Red Hat

                              References

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