Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

phpoffice/phpexcel

              1.8 @ 39534e3
            

Fixes

CVEs

HIGH

Peak severity

Highlights

XML External Entity (XXE): 2 prior fixes. Scrutinize any change in this area.

PHPExcel_Reader_Abstract: most-fixed (3 issues). Treat as high-risk during review.

3 high-severity fixes in this history; regressions here are high-impact.

Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

XML External Entity (XXE): Incomplete regex patterns in the XML security scanner failed to detect DOCTYPE and ENTITY blocks, especially when bypassed via HTML reader inputs or UTF-16 encodings with null bytes. This allows remote attackers to perform arbitrary file reads and cause Denial of Service.