A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index.
Metrics
Affected Vendors & Products
References
History
Mon, 21 Sep 2026 08:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow and Use-After-Free in libxls xls_getCSS Function |
Mon, 21 Sep 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow and Use‑After‑Free in libxls xls_getCSS Function | |
| Weaknesses | CWE-416 |
Tue, 15 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
Fri, 11 Sep 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Libxls
Libxls libxls |
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| Vendors & Products |
Libxls
Libxls libxls |
Thu, 10 Sep 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Heap Buffer Overflow and Use‑After‑Free in libxls xls_getCSS Function | |
| Weaknesses | CWE-122 CWE-416 |
Thu, 10 Sep 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index. | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-09-10T00:00:00.000Z
Updated: 2026-09-15T14:11:05.734Z
Reserved: 2026-08-25T00:00:00.000Z
Link: CVE-2026-79591
Updated: 2026-09-15T14:09:46.670Z
Status : Deferred
Published: 2026-09-10T21:17:46.933
Modified: 2026-09-22T20:00:03.713
Link: CVE-2026-79591
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