CVE-2026-76781

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Source
https://cve.org/CVERecord?id=CVE-2026-76781
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76781.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-76781
Downstream
BELL (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
OESA (4)
RHSA (1)
UBUNTU (1)
Published
2026-09-17T15:11:29Z
Modified
2026-10-28T10:45:53Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Libxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute
Details

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).

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-476"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76781.json"
}
References

Affected packages

Git / gitlab.gnome.org/gnome/libxml2

Affected ranges

Type
GIT
Repo
https://gitlab.gnome.org/gnome/libxml2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c6324894
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "fixed":  "c6324894"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76781.json"