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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-84wq-86v6-x5j6 | PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader |
Wed, 13 May 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:* |
Wed, 13 May 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 13 May 2026 00:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Phpoffice
Phpoffice phpspreadsheet |
|
| Vendors & Products |
Phpoffice
Phpoffice phpspreadsheet |
Tue, 12 May 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the SpreadsheetML XML reader (Reader\Xml) does not validate the ss:Index row attribute against the maximum allowed row count (AddressRange::MAX_ROW = 1,048,576). An attacker can craft a SpreadsheetML XML file with ss:Index="999999999" on a <Row> element, which inflates the internal cachedHighestRow to ~1 billion. Any subsequent call to getRowIterator() without an explicit end row will attempt to iterate ~1 billion rows, causing CPU exhaustion and denial of service. This vulnerability is fixed in 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0. | |
| Title | PhpSpreadsheet: CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-13T15:03:23.782Z
Reserved: 2026-04-15T15:57:41.717Z
Link: CVE-2026-40863
Updated: 2026-05-13T15:02:26.467Z
Status : Analyzed
Published: 2026-05-12T22:16:33.783
Modified: 2026-05-13T18:01:19.827
Link: CVE-2026-40863
No data.
OpenCVE Enrichment
Updated: 2026-05-12T23:45:25Z
Github GHSA