CVE-2026-56018 JavaScript::Minifier::XS versions before 0.16 for Perl leak memory on every call to minify(), allowing unbounded memory growth

JavaScript::Minifier::XS versions before 0.16 for Perl leak memory on every call to minify, allowing unbounded memory growth. In JsMinify XS.xs the cleanup frees only the NodeSet structures and never the per-token contents buffers allocated in JsSetNodeContents; JsDiscardNode unlinks nodes withou...

CVE-2026-56018

CVE-2026-56018 concerns JavaScript::Minifier::XS for Perl with memory leak in versions before 0.16. The root cause is that, in JsMinify (XS.xs), cleanup frees only NodeSet structures but not per-token contents buffers, and JsDiscardNode unlinks nodes without freeing their contents. As a result, e...