CVE-2026-40902
- Source
- https://cve.org/CVERecord?id=CVE-2026-40902
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40902.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-40902
- Aliases
- Published
- 2026-05-12T22:02:39.802Z
- Modified
- 2026-07-08T08:13:13.006366317Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- PhpSpreadsheet: CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions
- Details
-
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 XLSX reader's ColumnAndRowAttributes::readRowAttributes() method reads row numbers from XML attributes without validating them against the spreadsheet maximum row limit (AddressRange::MAX_ROW = 1,048,576). An attacker can craft a minimal XLSX file (~1.6KB) containing a <row r="999999999"/> element that inflates cachedHighestRow to 999,999,999, causing any subsequent row iteration to attempt ~1 billion loop cycles and exhaust CPU resources. This vulnerability is fixed in 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40902.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-770" ] }- References
Affected packages
Git / github.com/phpoffice/phpspreadsheet
Affected ranges
- Type
- GIT
- Repo
- https://github.com/phpoffice/phpspreadsheet
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "source": "CPE_RANGE", "cpe": "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "1.30.4" }, { "introduced": "2.0.0" }, { "fixed": "2.1.16" }, { "introduced": "2.2.0" }, { "fixed": "2.4.5" }, { "introduced": "3.3.0" }, { "fixed": "3.10.5" }, { "introduced": "4.0.0" }, { "fixed": "5.7.0" } ] }
Affected versions
1.*
1.0.0
1.0.0-beta2
1.1.0
1.10.0
1.10.1
1.11.0
1.12.0
1.13.0
1.14.0
1.14.1
1.15.0
1.16.0
1.17.0
1.17.1
1.18.0
1.19.0
1.2.0
1.2.1
1.20.0
1.21.0
1.22.0
1.23.0
1.24.0
1.24.1
1.25.0
1.25.1
1.25.2
1.27.0
1.28.0
1.29.0
1.29.1
1.29.10
1.29.11
1.29.12
1.29.2
1.29.4
1.29.5
1.29.6
1.29.7
1.29.8
1.29.9
1.3.0
1.3.1
1.30.0
1.30.1
1.30.2
1.30.3
1.4.0
1.4.1
1.5.0
1.6.0
1.7.0
1.8.0
1.8.1
1.8.2
2.*
2.0.0
2.1.0
2.1.1
2.1.10
2.1.11
2.1.12
2.1.13
2.1.14
2.1.15
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
2.2.0
2.2.1
2.2.2
2.3.0
2.3.10
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
3.*
3.10.0
3.10.1
3.10.2
3.10.3
3.10.4
3.3.0
3.4.0
3.5.0
3.6.0
3.7.0
3.8.0
3.9.0
3.9.1
3.9.2
3.9.3
4.*
4.0.0
4.1.0
4.2.0
4.3.0
4.3.1
4.4.0
4.5.0
5.*
5.0.0
5.1.0
5.2.0
5.3.0
5.4.0
5.5.0
5.6.0
Other
phpexcel-last-cherry-picked-commit
phpexcel-last-release-1.*
phpexcel-last-release-1.8.1