securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file
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This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 3.1%, top 13% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
securityScan() in PHPOffice PhpSpreadsheet through 1.5.0 allows a bypass of protection mechanisms for XXE via UTF-7 encoding in a .xlsx file
November 14, 2018
November 21, 2024
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| phpoffice/phpexcel | 1.7.9 ... 1.8.1 (8 versions) | 1.8.2 | — |
| phpoffice/phpspreadsheet | 1.0.0 ... 1.5.0 (11 versions) | 1.5.1 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
PhpSpreadsheet < 1.5.0 - XML External Entity (XXE)
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CWE-91