CVE-2026-26824

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Source
https://cve.org/CVERecord?id=CVE-2026-26824
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26824.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-26824
Downstream
Published
2026-06-03T00:00:00Z
Modified
2026-07-08T08:12:41.204121353Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
[none]
Details

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in readMSAT() is not fully initialized before being consumed by ole2validatesectorchain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26824.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/libxls/libxls

Affected ranges

Type
GIT
Repo
https://github.com/libxls/libxls
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c199d132494833da696b58aa4acf3fc5a36d930b
Database specific 
{
    "source": [
        "DESCRIPTION",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:libxls_project:libxls:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.6.3"
        },
        {
            "last_affected": "1.6.3"
        }
    ]
}

Affected versions

v0.*
v0.2.0
v0.3.0
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.5.0
v1.5.0-rc0
v1.5.0-rc1
v1.5.0-rc2
v1.5.0-rc3
v1.5.0-rc4
v1.5.1
v1.5.1-rc0
v1.5.1-rc1
v1.5.2
v1.5.2-rc0
v1.5.3
v1.5.3-rc0
v1.6.0
v1.6.0-rc0
v1.6.1
v1.6.2
v1.6.2-rc0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26824.json"