Json-Parser

GitLab Notebook-Diff Oj Parser Memory-Corruption Chain → Unauthenticated-Reach RCE (No CVE Yet)

GitLab renders diffs for Jupyter notebooks by passing repository-controlled JSON through Oj, a native (C-extension) Ruby JSON parser, in the Puma worker process. The researcher (Yuhang Wu, depthfirst.com) found and chained two distinct memory-corruption bugs…