CVE-2020-7776
Cross-site Scripting (XSS)
MEDIUM 6.4EPSS 1.3%
This affects the package phpoffice/phpspreadsheet from 0.0.0. The library is vulnerable to XSS when creating an html output from an excel file by adding a comment on any cell. The root cause of this issue is within the HTML writer where user comments are concatenated as part of link and this is returned as HTML. A fix for this issue is available on commit 0ed5b800be2136bcb8fa9c1bdf59abc957a98845/master branch.
- Affected
- phpoffice/phpspreadsheet
- CVSS v3.1 NVD
- 6.4 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - CVSS v3.1 SNYK
- 7.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N - CVSS v2.0 NVD
- 3.5 LOW
AV:N/AC:M/Au:S/C:N/I:P/A:N - EPSS
- 1.32% chance of exploitation in the next 30 days, 70th percentile
- Published
- 2020-12-09
- Updated
- 2024-09-16
Proof-of-concept exploits (1)
Security advisories
- PHPOffice/PhpSpreadsheet/commit/0ed5b800be2136bcb8fa9c1bdf59abc957a98845
- advisories/GHSA-4mqv-gcr3-pff9