OSEC-2026-03 opam install sandbox escape

Summary .install files do not validate whether they are inside the package area, and so can bypass sandboxing. Exploit In a package.install file, this installs a file as /.bashrc: bin: "payload.sh" "../../../.bashrc" Timeline - 2026-04-11: Anil forwarded the issue from Andrew Nesbitt to the OCaml...