Security context

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

symfony/serializer

              8.2 @ f9642cd
            

Fixes

CVEs

HIGH

Peak severity

Highlights

CSV Injection: 1 prior fix. Scrutinize any change in this area.

Encoder/CsvEncoder.php: most-fixed (1 issue). Treat as high-risk during review.

1 high-severity fix 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: Processing XML documents without disabling external entity loading or blocking custom DTDs allows attackers to perform XXE injection, potentially exposing sensitive local files or inducing Server-Side Request Forgery (SSRF).

CSV Injection: Generating CSV exports containing untrusted user input without escaping formula-triggering characters (=, -, +, @) allows attackers to execute arbitrary commands or exfiltrate data when the CSV is opened in spreadsheet software.