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YAML Parser Stack Exhaustion via Unbounded Recursion in Nested Blocks, Sequences, and Mappings
May 20, 2026 #Security Advisories
HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite: javascript: URI Survives Sanitization (XSS)
May 20, 2026 #Security Advisories
YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex
May 20, 2026 #Security Advisories
YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")
May 20, 2026 #Security Advisories
Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points
May 20, 2026 #Security Advisories
Sandbox does not protect against resource exhaustion
May 20, 2026 #Security Advisories
`template_from_string()` escapes a SourcePolicy-driven sandbox via synthesized template name
May 20, 2026 #Security Advisories
PHP code injection via `{% use %}` template name
May 20, 2026 #Security Advisories
Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled arguments
May 20, 2026 #Security Advisories
The `spaceless` filter implicitly marks its output as safe
May 20, 2026 #Security Advisories