CVE-2026-76956

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Source
https://cve.org/CVERecord?id=CVE-2026-76956
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-76956.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-76956
Downstream
Related
Published
2026-08-20T04:22:51Z
Modified
2026-09-10T18:27:15Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.

Database specific 
{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-394"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76956.json"
}
References

Affected packages

Git / github.com/libexpat/libexpat

Affected ranges

Type
GIT
Repo
https://github.com/libexpat/libexpat
Events
Introduced
c61098da494eea1cbd091118118dcee417faacea
Fixed
12cf0b1f25f026a022fe728ad8f7e3d017285b80
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.8.2"
        },
        {
            "fixed": "2.8.4"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

Other
R_2_8_2
R_2_8_3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-76956.json"