What is CVE-2019-12331?

CVE-2019-12331 is a high-severity vulnerability in Phpoffice Phpspreadsheet, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.8/10. Published 2019-11-07.

How severe is CVE-2019-12331?

High severity. CVSS v3 base score is 8.8 out of 10.

XXE in Phpoffice Phpspreadsheet

CVE-2019-12331

PHPOffice PhpSpreadsheet before 1.8.0 has an XXE issue. The XmlScanner decodes the sheet1.xml from an .xlsx to utf-8 if something else than UTF-8 is declared in the header. This was a security measurement to prevent CVE-2018-19277 but the…

Vulnerability class: XXE (XML External Entity)

EPSS: 0.013 (68.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Phpoffice Phpspreadsheet
N/a — versions n/a

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-12331?: CVE-2019-12331 is a high-severity vulnerability in Phpoffice Phpspreadsheet, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.8/10. Published 2019-11-07.
How severe is CVE-2019-12331?: High severity. CVSS v3 base score is 8.8 out of 10.